They may be herbs, shrubs, or trees.

它们可能是草本植物、灌木或树木。

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As soon as he thought he must spend his life riding the bike on the dusty road with no flowers or trees, he felt somewhat sorry.

一想到要骑着自行车在这条尘土飞扬、没有花草树木的路上度过余生，他就觉得有些难过。

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No grass or trees grow here.

四周既不长草，也没有树。

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Some helped to rid the city of troublesome invasive plants, or cared for trees at city parks and schools.

VOA: special.2009.09.04

And the boy uses the trees to do two things, right: to go up, or go out, and come back, to return.

这个孩子用树做了两件事：,上去，出去，回来，落下。

耶鲁公开课 - 现代诗歌课程节选

He went out and saw his mum in the trees, in the clouds, or when the birds were singing.

他走出去，看到自己的母亲,在树上，在云里，在鸟儿的歌声中。

普林斯顿公开课 - 人性课程节选

Many state or local extension services will test your soil and tell you what it needs for particular plants, shrubs or trees.

CNN: X-rated yards save the environment

If a skier is pushed off a cliff, gets stuck in a divot or suffers trauma from hitting rocks or trees, an airbag deployment may be useless.

BBC: The ski gear that could save lives

Maybe an electrical appliance is humming, or trees outside are rustling.

CNN: Your detour to a stress-free life