Sinuidal
正弦波; 正弦形
🗣️ 情景例句
Break a leg!
祝贺！
I have no idea what they're going to say, so I'll have to play it by ear.
我一点不知道他们将会说些什么，所以我只好见机行事。
No, sir, I always walk this way.
不，先生，我一直是这样走路的呀！