Optical shutter
[计] 光闸
🧩 词语组成解析
🗣️ 情景例句
You've been like a second family to me.
你们就像我的第二个家一样。
Excuse me, I'd like to ask you a question.
对不起，我可以问个问题吗？
' I looked down and nearly fell off the ladder when I saw a policeman.
”我向下面看去。当我看清是一个警察时，差一点儿从梯子上掉下去。