事先

Authorized to audit documentation After that, in the form of a prior agreement, in accordance with the letter of credit payment, acceptance or negotiation bank payment.

开证行审核单据无误后，以事先约定的形式，对已按照信用证付款、承兑或议付的银行偿付。

Multiple trials is the basic concept of many parallel simulated annealing. It is to perform multiple trials at the same time to search acceptable solutions. The division simulated annealing with no communication and The clustering simulated annealing are two common types of parallel simulated annealing methods. The division simulated annealing with no communication makes each processor generate its own adjacent solution from its own current solution and compute the acceptance probability for a adjacent solution. Each of the processors searches solutions without communicating each other. Clustering simulated annealing makes each processor generate its own adjacent solution from a common current solution and compute the acceptance probability for each adjacent solution. Then, it decides which adjacent solution should be used to replace current solution according to a pre-specified rule.

许多平行模拟退火法之理论依据为多向试验，利用同一时间探索更多方向的试验来拓展搜寻的广度或深度，不进行沟通的分工模拟退火法(the division simulated annealing with no communication)以及丛集模拟退火法(the clustering simulated annealing)皆为平行化的模拟退火法，前者定义为各个处理器针对各自的起始解进行搜寻，产生各自的搜寻序列，在搜寻过程中处理器不进行任何沟通，各处理器仅针对自身之目前解进行搜寻；而后者定义为让所有处理器针对同一目前解进行运算搜寻各自的可能解，并各自决定其产出解之接受机率，最后根据事先决定之规则进行沟通比较，挑选其中一个可接受解取代目前解。

This kind of previous job is accessary .

这种事先的准备工作是附带进行的。

We should make accurate estimate at first.

我们需要事先作出准确的估计。

We need to calculate accurately in advance.

我们需要事先作出准确的估计。

We need to estimate accurately in advance.

我们需要事先作出准确的估计。

We need to estimate it accurately in advance.

我们需要事先作出准确的估计。

Because costars did not make arrangements beforehand, we burst out laughing in ad lib of a partner, and made NG a lot.

因为合演时没有事先预演排练，我们和夥伴们会在表演时突然笑出来，也搞出了很多NG。

"The improv moments were gold," says Adamson. Those are the moments that give the animators the most to go on, because at that point, it's not a written piece of dialogue, it's a character come to life.

亚当逊表示：「这些即兴演出的时刻相当珍贵，它让动画家能充分发挥，因为这时候已经不是事先写好的台词，而是活生生的角色在说话。

It's also important to call ahead and request adjoining rooms or anything special you might need.

事先打电话预定一个隔壁的房间或是一些必需品也是很重要的。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。