“down grade”簡單造句，down grade造句子

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.

3、Business is on the 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.

5、His career has been 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.

2、Their marriage is on the down grade.

1、long heavy down grade