我能够整理床 » The opportunity to organize my bed 那是啥 » It is valid 我永远是你的 你也永远是我的 » I will always be you you will always be my ..
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It is not valid 对它无效
它同样有效。
If it is valid, the message is processed.
如果它是有效的,则处理消息。
If the file is there, you test it to see if, on its own, it is valid XML.
如果已经有文件了,就对之进行测试,看它本身是不是有效的XML。
It's not a valid experiment if it has no chance of showing that my hypothesis is flawed.
如果根本没可能证明我的假设,是有瑕疵的,那么这个试验。
if the Law of Inertia is valid for me, it's valid for other people in the same room at rest with respect to me.
如果惯性定律对我适用,那就对这屋子里的其他和我保持相对静止的人,也同样适用
But when you start writing programs, especially when we get to web-based stuff where you want -- to check the user's input -- is it valid, is it an email address, -- and all these different scenarios -- it's actually often useful to be able to just enumerate them or rattle them off using this switching construct instead.
但是当你看是写程序时,特别是当我们,使用基于网络的东西,你想要,检查用户的输入-,它是合法的吗?它是不是一个电子邮箱地址?,所有的这些场景-,实际上它常常是有用的,当你用枚举结构列举它们,或者用它来快速地来说出它们。
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