Preliminary amplifier
[计] 前置放大器
🧩 词语组成解析
preliminary
[prɪ'lɪmɪnɛri]
adj. 初步的，初级的;预备的;开端的;序言的;
n. 准备工作;预赛;初步措施;（对学生等的）预考;
pre预先+limin门槛，限制+ary形容词后缀→入门以前→初步的
🗣️ 情景例句
I have a new math program, and I want to learn how to use it.
我有一个新的数学程式 我想学习怎样用。
Here are you Chinese Yuan for $ 1000. And your passport and exchange memo.
这是您1000美元所换的人民币。给您护照和兑换清单。
In another game, as the turtle swims across the oceanarium, the first porpoise swoops down from above and butts his shell with his belly.
在另一场游戏中，当海龟游过水族馆时，第一只海豚从上方猛扑下去，用腹部撞击龟壳。