Blm
[化] 双层脂膜; 黑脂膜
🗣️ 情景例句
It is absolutely impossible.
这是绝对不可能的。
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
I've been here before.
我以前来过这里。