当他们的声音渐渐消失的时候，泻湖上空出现了冰冷的寂静，接着是一声微弱的哭声。

When their voices died away there came cold silence over the lagoon, and then a feeble cry.

youdao

她的笑容渐渐消失了。

Her smile slowly disappeared.

youdao

哀婉的歌声渐渐消失了。

The melancholy song died away.

《牛津词典》

The force may taper off, the force may not be given by a straight line, but for modest deformations, every spring will have a linear regime in which the force is linearly proportional to the stretching.

它产生的力可能会渐渐消失,力的曲线可能不是一条直线,而有轻微的弯曲,每个弹簧都有一个线性区间,在这一区间内,力和伸长量是线性关系

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