1.
A preceding occurrence, cause, or event.
先前的前面的事件，事情
2.
The rain fell again but not as hard.
不过已经不如先前凶猛。
3.
The heat has grown less intense.
没有先前那样热了。
4.
This is in contrast to previous policies.
这和先前的政策成对比。
5.
Did this condition pre-exist?
这种情形先前存在吗？
6.
A forerunner or predecessor.
前人，先驱先行者或先驱
7.
Going before, in front, or forward.
先行的走在前面的，在前面的或向前的
8.
stirred the soup Before tasting it.
在喝汤之前先搅一搅
9.
Straighten out the material before cutting it.
在切割前先将材料弄直。
10.
I cut the tail off before I cook the fish.
我在煮之前先切掉鱼尾。
11.
Score the paper before tearing it.
把纸撕开前先作折痕。
12.
Set up the mosquito net before you make the bed.
铺床前先把蚊帐挂起来。
13.
Put in the money before dialling.
拨号之前先放钱进去。
14.
Shake the bottle before taking the medicine.
服药前先将药瓶摇一摇.
15.
One must focus the camera before taking a picture.
拍照之前先要对焦距。
16.
Put out the fire before going to bed.
睡觉之前先熄掉炉火。
17.
Lock the stable door before the steed is stolen
马未偷走前,厩门先锁上
18.
To soak(laundry)before washing.
预浸在洗之前先浸（衣物）