1、prevent

防止；預防；阻止

These methods prevent pregnancy.

這些方法能防止懷孕。

Further treatment will prevent cancer from developing.

進一步的治療將阻止癌癥惡化。

阻止；制止；阻礙

He said this would prevent companies from creating new jobs.

他說這將使公司無法創造新的工作機會。

Its nationals may be prevented from leaving the country.

其國民可能會被禁止出境。

2、confuse

混淆;搞錯

Great care is taken to avoid confusing the two types of projects.

大家非常謹慎，以免把這兩類項目弄混。

I can't see how anyone could confuse you with another!

我不明白怎么會有人把你和另外一個人搞混！

把…弄糊涂;使困惑

German politics surprised and confused him.

德國政治既令他驚訝，又讓他困惑不解。

攪亂;使復雜化

To further confuse the issue, there is an enormous variation in the amount of sleep people feel happy with.

使問題進一步復雜化的是，每個人需要的睡眠時間千差萬別。