His heart sank at the thought of war.

想到战争他情绪显十分低沉。

It's no use letting yourself fall into the dumps.

你听任自己情绪低沉下去一点用也没有。

Her mood threw a dinge even over her students.

忧郁甚至弄学生都情绪低沉。

Flight naif come of Flight see is sool Flight of HongKong is now border.

嗬！（低沉语气词）是我，你告诉我，你到有没有爱过我。

Her voice was low and shaky with emotion.

声音低沉，因激动而有些颤抖。

Her words were inward and indistinct when she was in a state of half unconsciousness.

"处迷状态时,说话声音低沉,模糊不清。"

He gave a hollow laugh.

他发出低沉空洞笑声。

A Deep chesty bawl echoes from rimrock to rimrock, rolls down the mountain, and fades into the far blackness of the night.

一个发自肺腑低沉而又尖厉号叫在大山深处回荡，最后划过大山，消逝在远方深沉夜色中。