His hand moved to his mouth as he tried to damp down the panic.

他用手捂住了嘴，试图使惊恐的情绪平静下来。

Difficulties did not damp down his enthusiasm for study, and he would try his best to realize his dream.

困难没有熄灭他的学习热情，他会尽力实现自己的梦想。

Nothing can damp down his spirits!

没有什么可以破坏他的兴致！

We'll damp down the fire for the night.

我们在晚上要炉火封起来。

We may damp down the fire furnace for the night.

我们可以把火炉子封上过夜。