“down grade”可以造什么句，down grade造句

2、Their marriage is on the down grade.

4、It's much core difficult to be on the up grade than on the down grade

6、The speed of a railway train is often much faster on a down grade.

8、In its fundamentals, the present international situation is one of a struggle between capitalism and socialism, in which capitalism is on the down grade and socialism on the upgrade.

3、Business is on the down grade.

7、The paper describes the safety on down grade successive route and in running direction of trains in sections and analyzes the advantages and disadvantages at the same time.

5、His career has been on the down grade.

1、long heavy down grade