1.talk about 談論

What are you talking about?
你們在談論什么?

We talked about that subject again.
我們又談到那個話題。

2.by contrast 相比之下；與之相比

In the United States, by contrast, 41% goes for agriculture, almost all of it for irrigation.
與之相比，美國全年41%的水投向了農業，并幾乎全都用在了灌溉上。

3.access to 接近；有權使用

You can turn on and off access to any of these groups.
您可以打開或關閉對任何這些組的訪問。

Regardless of where we are and what we are doing, we want access to our data.
不管我們身在何處、在做什么，我們都想要訪問到我們的數據。

4.provide for 供養，供給

The local government provided special buses for the guests.
地方政府為賓客提供了專車。

I'm sure that I shall be well able to provide for my wife and family.
我確信我將完全能養活我的妻兒老小。