canceling for a legitimate reason is fine, but respect your date's time so that they can plan their night without you.

or is it justified for students to venture into a romantic relationship from which they will learn valuable lessons absent from their textbooks?

还是说，学生有正当的理由谈恋爱，因为他们可以在恋爱中学到书本上没有的知识呢？

most of us don't see ourselves as liars, usually because there are "valid reasons" for it.

我们大多数人认为自己不是说谎者，通常是因为他们有“正当的理由”。

but sometimes a source has valid reasons to request, or demand, that his identity be kept secret.

但在有些时候，某一消息来源有正当的理由请求或要求对其身份进行保密。

these uses cannot be justified now; nor are they likely to be in the near future.

现在还没有正当的理由来用它们，近期也不可能。

thus, there are legitimate reasons for trying to reduce the costs implied by the previous sections.

因而有正当的理由可以尝试降低前面的部分所暗示的成本。

but there's a lot of good reasons why raising the minimum wage makes sense.

但除此之外提高最低工资标准还有大量正当的理由。

phoebe: you name one woman that you broke up with for a real reason.

你说你和哪个女孩分手是因为正当的理由？

you have a legitimate excuse.

你有正当的理由。

but the former fed chief did say that some firms and institutions warrant assistance.

不过，这位前美联储主席强调，一些公司和机构有正当的理由得到政府的救助。

it was imputed to very reasonable weariness, and she was thanked and pitied;

她解释说是由于疲倦的缘故，倒是个很正当的理由。

not that i think the filings unjustified.

我并不是认为这起诉讼缺乏正当的理由。

make sure you're in it for the right reasons before initiating contact.

在恢复联系之前确保自己有正当的理由。

the boy couldn't give a legitimate reason for being absent from school.

这男孩对于旷课提不出正当的理由。

it was determined you had good cause.

我们已确定，你有正当的理由。

he could have no honest reason for complaint.

他没正当的理由来发牢骚。

the constable had reasonable grounds for arresting her.

警察有正当的理由逮捕她。

we had sound reasons for doing this, remember?

我们有正当的理由这么做，记得吗？

i think he was quite justified in refusing to help her.

我认为他拒绝帮助她是有相当正当的理由的。

the pharmaceutical industry can claim with some justification that it receives disproportionate attention given that it accounts for only about one-tenth of the total healthcare bill in most developed nations.

制药业能够基于相对正当的理由提出：鉴于在多数发达国家，药品仅占全部医疗费用的十分之一左右，制药业受到了不成比例的关注。

the supplier shall provide the justification.

供应商应提供正当的理由。