Lifespans
n. （人或动物的）寿命( lifespan的复数形式 ); 存在期; 使用期; 有效期
🗣️ 情景例句
I think I've seen you before, You look very familiar.
我想我以前在哪里见过你，你看起来非常面熟。
I'd like to try on these hats.
我想试试这些帽子。
That's not allowed. Once you are in here, listen to your teacher.
那是不允许的。一旦进来了，你们要听老师的话。