Ion optics
[化] 离子光学
🧩 词语组成解析
ion
['aiən]
n. <物>离子;
optics
['ɔptiks]
n. 光学;
🗣️ 情景例句
Advice doesn't normally come cheap, but this piece is for free...
通常来说，忠告都是价值不菲的，但这个是免费赠送的。。。
I took off my raincoat.
我脱下了我的雨衣。
No. It isn't real, said Meimei. It was used in plays.
“不，那不是真的，”梅梅说，“那是演戏用的。”