大学英语：decline

vi.1、下倾，下降；2、衰退，衰弱；3、谢绝，拒绝

The production of natural gas declined slightly.

天然气的生产略有下降。

His strength slowly declined.

他的体力慢慢地衰弱了。

A blind man smilingly declined to be helped across the street.

盲人微笑着谢绝别人帮他过马路。

vt.谢绝，拒绝

He respectfully decline the invitation.

他有礼貌地谢绝了邀请。

n.1、下倾，下降；2、衰退，衰弱

The customs figures show a steady decline in British trade.

关税数字表明英国的贸易在持续下降。

We are studying the decline and fall of ancient Rome.

我们正在研究古罗马的衰亡。

② impact

n.1、冲击，碰撞；2、效果，影响

The storm of the world revolution has powerful impact on imperialism.

世界革命风暴对帝国主义有强大的冲击力。

The book Ten That Shook the World made a great impact on its readers.

《震撼世界的十天》这本书对读者产生了很大的影响。

vt.装紧，压紧

The ground had been impacted by many people walking across it.

因为走的人多，地面被踏得坚实了。