backstroke
n [U] swimming stroke done on one´s bac;s back in the water 仰泳.
🗣️ 情景例句
It's find out eventually. It's just a matter of time.
他终究会发觉的。 这只是个时间问题。
Forget not that you are a man.
不要忘记你是一个人。
Was the philosopher who refused to look through Galileo's telescope more culpable than those who alleged that the spiral nebulae observed with Lord Rosse's great telescope in the eighteen-forties were scratches left by the grinder?