look on… as

refer to…as

3. 区别

distinguish… from…;

separate… from…

divide… from…

tell…from…

4.就我(们)所知

As far as we know,

As is known to all,

As we all know,

As far as I’m concerned

5.重要的

critical, essential, vital, crucial, significant It is …to do sth.

6. 减少

diminish, decrease, reduce, cut down cut back on, decline, eliminate

7. 尽管

despite that,

in spite of,

although,

though

8. 关于，鉴于，由于

with regard to

in view of

with a view to

concerning

considering