tremor

The old man has a tremor in his hands.

那位老人的双手颤抖着。

There was a slight tremor in his voice.

他的声音略微有点儿颤抖。

The tremor was centred in the Gulf of Sirte.

地震以苏尔特湾为中心。

The old lady could not hide a tremor in her voice when she said, "Kiss me again, Tom!"

老太太无法隐藏声音中的颤抖，说：“再亲我一下，汤姆！”

Occasionally, a bubble is not removed during refining, a sand grain refuses to melt, a tremor in the tin puts ripples into the glass ribbon.

"有时候，在提炼的过程中会出现这些情况：一个气泡没有被移除，一个砂粒没有熔化，（熔融的）锡的一次颤动把波纹带进了玻璃带中。