She was in the kitchen sweeping crumbs into a dust pan.
她在厨房里正把面包屑扫到一个簸箕里。
When he sees me sweeping the carpet, when he sees what a cloud of dust I raise, he begins to cluck like a pygmy.
每当他见我扫地毯,见到我扬起一大团灰尘,他就像一个小矮人一样咯咯叫开了。
The filaments have widths that suggest they are formed as shockwaves from exploding stars travel through the medium, sweeping up and compressing the interstellar dust and gas.
丝状尘埃云的宽度暗示它们是形成自一些通过中等大小正在收缩的星际尘埃和气体的恒星然后爆发后的激波而成。
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