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Spiracles of most insects can close to keep things like dust out.
大多数昆虫紧密气门，防止灰尘进入。
youdao
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The spiracles of most insects can close to keep things like dust out.
大多数昆虫紧密气门，防止灰尘进入。
youdao
-
The spiracles of most insects can close to keep things like dust out.
大多数昆虫紧密气门，防止灰尘进入。
youdao