在所有原色的线头数量相等，并且没有被灰尘抑或其他的残渣遮盖的理想情况之下，那些绒线应该是白色的而不是灰色。

In an idealized situation, where the threads contained all the primary colors in equal amounts, and were not obscured by dirt and other residues, the lint would appear to be white, not gray.

youdao

在恶劣环境下—如下着大雪—没有遮盖你只能活3个小时。

In a harsh environment-it's snowing, say-you have 3 hours to survive without shelter.

youdao

但是从来没人求她为新娘刺绣遮盖她们纯洁的额颜的白色面纱，这是记载中绝对没有的。

But it is not recorded that, in a single instance, her skill was called in aid to embroider the white veil which was to cover the pure blushes of a bride.

youdao