英语语法分析

There is an unvoiced contract that binds the generations.

这是一个默默达成的合约，它将几代人困在了一起。

Unvoiced laughter, however, is more of a conscious expression.

而无声的笑更多的是有意识的表达。

Laughter mainly comes in two types, researchers think: voiced, and unvoiced.

研究人员认为，笑主要有两种类型：有声和无声。