backstroke
US /ˈbæk.stroʊk/
UK /ˈbæk.stroʊk/

1.
背泳ぎ
a swimming stroke executed on the back with the arms lifted alternately out of the water in a backward circular motion and the legs extended and kicking
:
•
She won the race with a powerful backstroke.
彼女は力強い背泳ぎでレースに勝った。
•
Learning the backstroke can be challenging at first.
背泳ぎを学ぶのは最初は難しいかもしれません。
1.
背泳ぎで泳ぐ
to swim using the backstroke
:
•
He can backstroke across the entire pool.
彼はプール全体を背泳ぎで泳ぐことができる。
•
She learned to backstroke when she was five years old.
彼女は5歳の時に背泳ぎを覚えた。