什么时候 的中文句子和英文句子

我不知道母亲什么时候会打电话来？

I wonder when mother will ring?


第一次测量声速是在什么时候？

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


我说不准他什么时候会来。

I can't say for certain when he will arrive.


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.


我不告诉你什么时候离开，你已经长大了，该自己作出决定。

I won't tell you what time to leave, you're old enough to use your own discretion.


你丈夫什么时候下班回家？

What time does your husband return from work?


我们什么时候会面合适？

What time is suitable for us to meet?


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.


告诉我镭是什么时候被发现的。

Tell me when radium was found.


截止到什么时候？

What's the deadline?