Rugby player Isadora Cerullo of Brazil kisses Marjorie, a volunteer, after receiving her wedding proposal on the sidelines of the women's rugby medal ceremony. REUTERS/Alessandro Bianchi

Doaa Elghobashy of Egypt and Kira Walkenhorst of Germany compete int he preliminary beach volleyball event. REUTERS/Lucy Nicholson

Rafaela Silva of Brazil celebrates winning Brazil's first gold in the 57kg judo final. REUTERS/Kai Pfaffenbach

Ruta Meilutyte of Lithuania competes in the 100m breaststroke. REUTERS/Michael Dalder

The Maracana Olympic Stadium during the opening ceremony is seen from the Mangueira favela slum. REUTERS/Ricardo Moraes

Giorgio Avola of Italy celebrates winning his foil match. REUTERS/Issei Kato

Samir Ait Said of France breaks his leg during competition on the vault. REUTERS/Athit Perawongmetha

Mathlynn Sasser of Marshall Islands celebrates int he women's 58kg weightlifting competition. REUTERS/Yves Herman

Performers take part in the Opening Ceremony. REUTERS/Lucy Nicholson

Michael Phelps of the U.S. celebrates as his 4 x 100m freestyle relay won the gold. REUTERS/Stefan Wermuth

A performer takes part in the opening ceremony. REUTERS/Stefan Wermuth

Kei Nishikori of Japan is reflected in a window as he serves against Albert Ramos of Spain. REUTERS/Toby Melville

The Refugee Olympic Athletes' team arrives for the opening ceremony. REUTERS/Kai Pfaffenbach

Michael Phelps, Ryan Held, Caeleb Dressel and Nathan Adrian of the U.S. celebrate on the podium for the 4 x 100m freestyle relay. REUTERS/David Gray

Kohei Uchimura of Japan falls as he competes on the horizontal bar. REUTERS/Dylan Martinez

Adam Peaty of United Kingdom celebrates after setting a new world record in the 100m breaststroke. REUTERS/Stefan Wermuth

Fireworks explode during the opening ceremony REUTERS/Pawel Kopczynski

Gold medal winner Wang Zhen of China (R) celebrates with silver medal winner and compatriot Cai Zelin after the 20km race walk . REUTERS/Sergio Moraes

Laurine van Riessen of the Netherlands and Virginie Cueff of France compete in the women's keirin cycling. REUTERS/Paul Hanna

Gold medalist Jemima Sumgong of Kenya and silver medalist Eunice Jepkirui Kirwa of Bahrain celebrate after the women's marathon REUTERS/Dylan Martinez

Michael Phelps of the U.S. reacts after winning gold in the 4 x 100m medley relay bringing his career total to 23 golds. REUTERS/Dominic Ebenbichler

Usain Bolt of Jamaica looks at Andre De Grasse of Canada as they compete in the men's 100m semifinal. REUTERS/Kai Pfaffenbach

Miles Gerek Meinhardt the U.S. competes against Artur Akhmatkhuzin of Russia in the men's foil team semifinals. REUTERS/Issei Kato

USA's Katie Ledecky swims with a big lead on her way to winning the gold and setting a new world record in the 800m freestyle. REUTERS/Stefan Wermuth

Britain's Kate Archibald, Laura Trott, Elinor Barker and Joanna Rowsell compete in the women's team pursuit cycling. REUTERS/Paul Hanna

Sailors compete under the Christ the Redeemer statue REUTERS/Brian Snyder

Simone Biles of the U.S. competes on her way to gold in the vault during the women's individual all-around final. REUTERS/Dylan Martinez

Yu Mengyu of Singapore eyes the ball during table tennis play against Kim Song I of North Korea. REUTERS/Alkis Konstantinidis

The court is cleaned by personnel as matches were delayed due to rain at the Olympic Tennis Centre. REUTERS/Toby Melville

Simone Manuel of the U.S. (L) and Canada's Penny Oleksiak (R) touch the wall to tie for the gold medal in the 100m freestyle. Picture rotated 180 degrees. REUTERS/Athit Perawongmetha F

Kenya Yasuda of Japan is injured in men's water polo. REUTERS/Laszlo Balogh

Serena Williams reacts during her match against Elina Svitolina of Ukraine. The Olympic champion and world number one tumbled out of the Rio singles competition in the third round on Tuesday after a shock defeat to Svitolina. REUTERS/Toby Melville

Cyrille Maret of France receives congratulations after winning the bronze medal. REUTERS/Toru Hanai

Emilie Andeol of France reacts in the women's 78kg judo medal ceremony. REUTERS/Murad Sezer

Jennifer Oeser of Germany watches as athletes compete in 10,000m final. REUTERS/David Gray

Gregorio Paltrinieri of Italy celebrates winning the gold with compatriot Gabriele Detti who won the bronze in the 1,500m freestyle. REUTERS/Stefan Wermuth

Stina Blackstenius of Sweden and team mate Magdalena Ericsson (6) celebrate after defeating the U.S. in the women's soccer. REUTERS/Ueslei Marcelino

Carli Lloyd of the U.S. is consoled by teammate Megan Rapinoe after the game. REUTERS/Ueslei Marcelino

Kristin Armstrong of the U.S. celebrates with her son after winning her third gold medal in women's cycling time trial. REUTERS/Matthew Childs

Simone Biles of the U.S. during the women's team artistic gymnastics final. REUTERS/Damir Sagolj

A general view of the Olympic diving pool and the pool for the waterpolo and synchronized swimming. The water in the Olympic diving pool appeared to turn a bright green hue on Tuesday, causing puzzlement among divers and audiences as the women's 10 meter platform final progressed, contrasting sharply against the still-blue color of another pool beside it. REUTERS/Antonio Bronic

Lee Eun-Ju of South Korea (R) takes a selfie picture with Hong Un Jong of North Korea. REUTERS/Dylan Martinez

Britain's Andy Murray reacts as a boy runs on to the court to ask him for an autograph, after he won his match against Juan Monaco of Argentina. REUTERS/Kevin Lamarque

Michael Phelps poses with his gold medal for the 4 x 200m freestyle relay. REUTERS/Dominic Ebenbichler

责编：李梓延

来源：Reuters