1.attempt to 嘗試，企圖

These books attempt to explain why that is, and what, if anything, should be done about it.
這些書試圖解釋為什么會那樣，如果能做的話應該做什么。

“We shall attempt to answer it in this book, ” he wrote.
“我們將試圖在這本書中回答這個問題”，他說道。

2.catch up with 趕上，追上；逮捕

We'll do our best to catch up with the advanced world levels.
我們將努力趕上世界先進水平。

They should take some crash courses to catch up with their classmates.
他們應該參加一些速成課程來趕上他們的同學。

3.at most 至多

At most, you might ask why?
最多，你可能會問為什么？

I do it for maybe an hour at most.
我或許在沙灘上最多呆一個鐘頭。

4.focus on 集中于

Focus on who you want to be and how you want to feel.
把精力集中在你想成為誰和你想要何種感覺上

Next, we turn from the disk subsystem to focus on the processors.
接下來，我們要將焦點從磁盤子系統轉移到處理器上。