For example: please arrange a meeting of all department heads by tomorrow at the latest.

请明天安排所有部门负责人开一次会。

Wednesday, Thursday at the latest, they'll be in Paris.

星期三，星期四，他们便会来巴黎。

Please be there by 8: 45 at the latest.

请在8点45分之前到那里。

Could you do this at the latest by 15.00. By 3 o'lock, please.

你们能在下午3点前交回吗？请在3点钟前交回。

It would start in the next hours with the aim of reaching an agreement by Sunday at the latest.”

来几个小时内会开始，目的是周日达成协议。”

You must submit your assignments by next Friday at the latest.

您必须在下周五之前提交作业。

You would have gotten it by Friday.

你周五能收到。

The next morning at the very latest.

在第二天早上。

It will end by 9 pm at the latest.

将在晚上9点结束。

This could be in the spring, it could be latest in the autumn.

这可能是在春天，也可能是在秋天。

When do you need them by, sir?

先生，你什么时候要呢？

By law, Carney will have to call a general election no later than October.

根据法律规定，卡尼必须在10月前举行大选。

You'll have to be at West London Air Terminal by 0810 at the latest.

--你必须在 0810 之前到达西伦敦航空站。

Entries for the competition should be submitted by November 28th at the latest.

参赛作品应11月28日提交。

I should be back by 11 o'clock at the latest.

【latest】我 11 点会回来。

Margaret is practically the last girl in our building to go.

玛格丽特大概是整座楼里嫁出去的吧。

He comes down on Thursday at the latest, very likely on Wednesday.

他星期四会来，很可能星期三来。

" I expect to be back in my place ten days from now at the longest" .

“我希望十天后回到我的位置” 。

You could say: Please … by tomorrow at the latest.

您可以说：请… … 在明天之前。

Well, I leave for Rome first thing tomorrow, so I will need your answer by tonight.

我明天一早要飞回罗马，所以今晚给我答复。