I can only give you another two hours/days/weeks/minutes.

我只能再給你兩個小時/兩天/兩個星期/兩分鐘。

I need to have it by lunchtime.

你得在午飯時間之前給我。

I need it on my desk by this afternoon.

在今天下午之前，必須放在我桌子上。

I have to have it no later than Friday at two P.M.

必須在星期五下午兩點之前給我。

You have to have this done by tomorrow.

你必須在明天之前把它完成。

Let's get this done. Let's get this over with. Let's get this taken care of.

咱們把它做完吧/咱們趕快把它解決

Let's take a break. It's break time. It's time for a break.

咱們休息一下吧/該休息了

Let's take a coffee break.

咱們喝杯咖啡休息一下吧。

I need to get out and stretch my legs/rest my eyes/clear my head.

我得出去拉伸腿/休息一下眼睛/讓腦袋清醒一下。

I need to get out of the office for a little while.

我得到辦公室外面呆一會兒。

Dialogue:

A: How about taking a break and talking about this over coffee.

你覺得咱們休息一下，邊喝咖啡邊討論怎么樣？

B: Sounds good, we're not getting much done just staring at the computer.

好主意，我們盯著電腦并沒有什么進展。