Are the inferences valid? Does the conclusion follow the premises?

推断有效吗？结论与前提一致吗？

A student passport is valid in accordance with the length of their programmes.

照的有效期与他们的时一致。

Certainly, there are valid concerns about the patchwork regulations that could result if every state sets its own rules.

当然，假如各州都设立自己的法规，“补丁法规”的担忧也是合理的。

But if you will refer to page 30 in the rules and regulations manual we sent you, you will see that unless there is a valid excuse for prolonged absence, your tuition will be forfeit.

但如果您看一下我们寄给您的校规手册第三十页，您就知道无正式的理由而长期缺席，所缴的费将会被没收。

So are travelers who already have valid visas.

持有效签证证件者也可以入境。

This is a hop-on hop-off service and tickets are valid for 24hours.

这是一种随上随下服务，车票24小时有效。

All the reasons it was popular in the past are just as valid today.

它在过去流行的所有原因在今天同样有效。

At that moment it occurred to Lynette that Chuck, though inebriated, had a valid point.

在那一刻，Lynette想到那个Chuck，尽管醉了，却有个正确的观点。

How long is the quotation valid for?

报价的有效期是多久？

Apple complies with valid subpoenas and search warrants, as we have in the San Bernardino case.

苹果一直服从政府机构依法出具的传讯和搜查令，我们在圣博娜迪诺枪击案中亦是如此。

British Vogue is challenging that, it's saying that clothes are something that we all wear, and because of that, we all deserve, and it's valid that we have a voice in this conversation.

英版Vogue就在挑战这一点，它宣扬的观点是，衣服不过是穿在身上的物品而已，也正因此，人人都有资格享有，在对时尚的探讨中，我们都应当拥有话语权。

No matter where you are from, your dreams are valid.

无论你来自哪里，你的梦想都会得到尊重。

And that makes a statement that perhaps all levels of reality are equally valid.

这表明也许所有层面的现实都同样有效。

The Special tickets are also valid for travel at weekends.

这种特殊票在周末出行也有效。

In many countries, a driving license is a valid proof of identity.

驾驶执照在很多家是有效的身份证明。

Communities that welcome diverse perspectives thrive not because they endorse all as valid, but because they question all on their merits.

欢迎不同观点的社区之所以能够蓬勃发展，并不是因为他们认可所有观点都是正确的，而是因为他们会对所有观点的优点提出质疑。

Even if you don't list the gaps on your CV you might be asked about inconsistencies in your work history and they need valid explanations.

即使你没有在简历中列出工作空窗期，你可能会被问到工作经历中不连续的地方，而他们需要合理的解释。

To be valid, thirty percent of Romania's 18.7 million registered voters need to take part.

要想使公投有效，那么罗马尼亚1870万注册选民中需要有30%的人参加投票。

When this happens, most soft-spoken people, sometimes the people with the most valid opinions by the way, are lost in the din.

当发这样的情况，反而说话较温和的人看法是最有根据的，却总在喧闹中会受到漠视。

But to this day, there are still scientists who maintain that initial analysis was valid.

但是直到今日，仍然有科家认为那些最初的分析是有效的。