Forepump
前置真空泵, 预抽真空泵
🗣️ 情景例句
I would like to make a suggestion.
我想提个建议。
He that hath time hath life.
有时间，就有生活。
when she remembered that she had gone shopping after the home help had left and she knew that she had turned both keys in their locks,
但突然记起来了，帮手是在她出去买东西之前走的，她还记得曾用了两把钥匙把大门锁上了。