你把它还给我是非常重要的，因为我现在必须给某人打电话。

It's very important you send it back to me because I have to phone someone right now.

我给某人打电话。

I'll ring sb. up.

回拨-给某人打电话以回复他们（未接）的电话。

Call back – to phone someone in reply to their (missed) call.

如果你不想给某人打电话，那就不要给他们机会。

Do not keep your options open with someone if you don't intend to call them.

当你给某人打电话的时候，尽量避免介绍自己，公司以及你所要推销的。

When you call someone, avoid making a mini-presentation about yourself, your company, and.

有时候，生活很难用语言去描述；你可能会遇到这样的情况：有时想给某人打电话，但还未拨通，你却又放下了电话，为什么？

Sometimes it's inenarrable. you would come across such a time when you want to call somebody, but finally you stop, why?