肯定...

Fortunately, we do not have to be certain of the causes.

幸好，我们不需要肯定它的原因。

How can I be so certain of this?

我如何能这么肯定这点？

But we can never be certain of how these different gemstones are valued by people.

但我们绝不能肯定如何对这些不同的宝石的价值的人。

Be certain/sure to do sth.

意思是"肯定会做某事"。

Be certain/certain to do sth.

意义是"肯定会做某事"。

And I can assure you that the compensation package is competitive and will be commensurate with your background and experience.

并且可以肯定这些职位将为您提供难得的职业发展机遇，以及符合您背景和经验、极具竞争力的综合待遇！

I believe you must be concerned about his education.

我相信你肯定关心他的教育吧。

You do not admire you so that the case will not follow the Lord, you will not give up and believe that all of you so that you will be convinced of the action taken.

你在没有确实使你佩服的情况下肯定不会跟从主的，你也不会相信而放弃所有的，你会在使你心服口服的情况下而采取行动的。

I mean, if it's strong enough to be blamed for things, then it's certainly strong enough to be credited for good things that it can do.

我的意思是，如果它强大到足以被指责的东西，那么它肯定是足够强大的好事，它可以的。

As long as there are rich people in the world, they will be desirous of distinguishing themselves from the poor.

as long as 有两个意思，一是用于本义，意为"与……一样长"，在否定句中，也可说成 so long as；二是用于引申义，表示"只要"，用于此义时也可说成 so long as(不管是肯定句、否定句还是疑问句)。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。