通常情况下，一个毒气分子附着在碳纳米管上就不再移动了。

Normally, a gas molecule attaching itself to a nanotube would stay there.

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一些毒气分子附着得比较厉害，以至于他们在圆柱中穿行的速度比其他分子慢得多。

Some gases stick more than others, and hence travel more slowly down the column.

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试验结果表明，腐殖酸钠的多基团大分子附着在硅酸二钙分子的表面上，使其不与溶液接触而避免二次反应的发生；

The results showed that the big molecules of humic acid sodium enwrapped dicalcium silicate surface , which prevented dicalcium silicate from contacting with the solution.

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Here, there are receptors on one cell and the ligand that they experience is not a dissolved molecule, but actually a molecule that's attached to another cell.

这个细胞上有许多受体,与之结合的配体并非是可溶性分子,而是一个附着在其他细胞上的分子

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