事先

To be forewarned is to be forearmed.

先得到警告即先有了准备。

Jim had the forethought to book in advance.

吉姆有远见作了先预。

He hasn't the least foreknowledge of this matter.

此他先一点也不知道。

Please inform me of your arrival time beforehand.

请先通知我你抵达时间。

Owing to a previous engagement, I shan't be able to come.

因先另有约会, 我无法前来。

Anglers are required to obtain prior authorization from the park keeper.

垂钓者必须先得到公园管理者许可。

The actor mouthed the words of the recorded song.

演员不出声地哼着那首已经先录好音歌曲。

The platoon made its way to the pre-arranged rendezvous in the desert.

这个排向先约定沙漠中会合点进发。

The witness at the trial had been carefully primed by defence lawyers.

被告律师对出席审讯证人先作了仔细指导。

They proposed to make arrangement beforehand.

他们提议先做好安排。

A little forethought would have saved you much trouble afterwards.

如果先稍微考虑一下话, 就会省掉你以后许多麻烦了。

We bought the table sight unseen and were pleased to find it was perfect for our kitchen.

我们先没看就买下了那张桌子,发现放在厨房里合适极了,这使我们很高兴。

I would be leery of committing my company to employ hundreds of Indian workers,sight and skill unseen.

在对几千名印度工人技术情况先还不了解时,我是不会随便让我公司雇用他们。

All bumbling conjurers, clumsy squires, no-talent bards, and cowardly thieves in the land will be pre-emotively put to death.

所有无能魔术师，笨拙随从，没有天游诗人以及胆小盗贼都将会先被处死。

The boss called the foreman on the carpet for granting sick leave to a worker without first asking for permission.

老板训斥那个工头未经先请示就擅自批准一个工人病假。

If you want to go to the concert, you'll have to make a reservation, or there will be no tickets.

如果你想去听音乐会，你得（先）预（票），否则会没有票。

7 Permanent weld backing bars, consumable inserts and nonconsumable insert rings are not permitted without prior written approval from SECCO.

先没有赛科公司书面批准，不允许有永久焊接支撑杆、熔化性嵌条和不可熔嵌环。

Compared with the computer tutor, with the tutee the direction of control between the computer and the user is reversed.

准备演示内容可以即时通过计算机输入，也可以先制作贮存在硬盘中，并通过桌面演示软件再次展示出来。

There was a half of bason of offwhite barnyard grass flour on the chopping board, it looked like arranging for in advance.

案板上放着半脸盆灰白色稗子面，看来是先给我准备。

To suppress the interference of amide groups in the amorphous phase,the film was placed in heavy water for 4 weeks for deuteration and the deuteration rate was determined.

为了排除非晶区域酰胺基团影响,先对尼龙1010样品膜进行了氘代,并测量了其最终氘代率。