1.
The children broke up not long ago.
孩子们不久前放假了。
2.
Develop a relaxing bedtime routine.
养成睡前放松的习惯。
3.
Maybe you put it to your left eye or to your right eye.
你可能放在左眼前，也可能放在右眼前。
4.
It(The sun) will burn off before noon.
中午以前天会放晴。
5.
Put in the money before dialling.
拨号之前先放钱进去。
6.
Doctors used to bleed sick people.
从前医生常为病人放血。
7.
injected-beam forward amplifier
注入式前向波放大管
8.
cathode modulation forward wave amplifier
阴极调制前向波放大管
9.
compound forward-wave amplifier tube
复合型前向波放大管
10.
Leave them outside the room before going to bed .
上床前把它放在门外。
11.
appose food before a person
把食物放在一个人面前
12.
input loading type preamplifier
输入加载式前置放大器
13.
transistor servo preamplifier
晶体管伺服前置放大器
14.
integrated video preamplifier
集成视频前置放大器
15.
input open type preamplifier
输入开路式前置放大器
16.
Bundles of flowers were put before the doorsteps.
一束束鲜花放在门阶前。
17.
forward wave crossed-field amplifier
前向波正交场放大管
18.
axially injection forward-wave amplifier tube
轴向注入前向波放大管