Vacuum preconcentrator
[化] 真空预浓缩器
🧩 词语组成解析
[化] 预浓缩器
🗣️ 情景例句
Because I don't want to be here.
因为我不想待在这 。
It is not the gay coat that makes the gentleman.
君子在德不在衣。
And now I'm telling you I can't manage this Friday.
我正要告诉你我星期五没办法（出来）。