什么时候 的中文句子和英文句子

第一次测量声速是在什么时候？

When did the first measurement of the speed of sound take?


世界是什么时候形成的？

When did the world come into being?


我们还说不上火车什么时候到达。

We are as yet unable to say when the train will arrive.


这个国家是什么时候成为主权国的？

When did it become a sovereign country?


他们想知道你们什么时候去公园。

They wanted to know when you would go to the park.


这件事什么时候提出来讨论？

When will the matter come up for discussion?


截止到什么时候？

What's the deadline?


这个悬而未决的问题什么时候能解决呢？

When will the pendent problem be solved?


我们什么时候会面合适？

What time is suitable for us to meet?


我不知道我们什么时候能开始，因为整个工程又回到了动荡不定的局面。

I don't know when we will be able to make a start because the whole project has gone back into the melting pot.