Quadrupole amplifier
[电] 四极放大器
🧩 词语组成解析
[化] 四极
🗣️ 情景例句
With all that money, she ought to have people working for her.
有她这么多钱，她应该雇人替她工作才对。
I'm afraid you will be too busy.
我怕你会太忙。
What about the Natural History Museum? So far as I know, it's free.
去自然历史博物馆怎么样？据我所知，那儿是免费的。