稀稀疏疏的一排观众并没注意到什么特别之处。

The sparse line of spectators noticed nothing unusual.

《柯林斯英汉双解大词典》

一个地广人疏的火山高原，一个无可挑剔的标准大峡谷。

A sparsely populated land of volcanic plateaus and large valleys with an impeccable standard for environment.

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他们希望更多的灵活性，而不是密而不疏的规定。

They want more flexibility, not tighter rules.

youdao

Many of them are derived from cholesterol and they're hydrophobic, which means they can penetrate through cell membranes.

多数分子都来自于胆固醇,它们是疏水性的,这意味着它们能够穿过细胞膜

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