Seven specks of dust disturbed by a ram, each of which was the length of.
公绵羊尘七粒，一粒这样的尘埃等于。
Seven tiny specks of dust, each of which was the length of.
微尘七粒，一粒微尘等于。
Seven specks of dust stirred up by a hare, each of which was the length of.
兔尘七粒，一粒这样的尘埃等于。
Seven specks of dust carried away by the wind, each of which was the length of.
风吹动的尘埃(客尘)七粒，一粒这样的客尘等于。
In July, planetary scientists announced two candidate dust particles from the Stardust spacecraft, which returned to Earth in 2006 after seven years of collecting dust samples in space.
行星科学家在七月宣称两颗来自星团航天器的备选尘埃粒子，在宇宙收集了7年尘埃样本后于2006年回到地面。
An infrared image reveals clouds of dust swaddling the stars of the Seven Sisters cluster, also known as the Pleiades.
红外线图象揭示灰尘的云彩襁褓这北斗七星群，也被认为是昴星团。
At six to seven years old more than half of the children were evaluated for their sensitivity to common allergens such as dust mites, ragweed and cats.
到6至7岁时，这835名儿童中，过半的人都有各种各样的过敏症，对常见的过敏原如尘螨，豚草和猫等产生过敏。
Seven particles of dust stirred up by a cow, each of which was the length of
奶牛尘七粒，每粒这样的尘埃等于
Wool wicks moisture away from the cover, "which prevents dust mites, mould and mildew from thriving, and it dries seven times faster than other fabrics," says Rossdeutscher.
羊毛能吸走表面的水分，这就能够防止尘螨和发霉，而且比其他纤维干燥7倍以上。
Wool wicks moisture away from the cover, "which prevents dust mites, mould and mildew from thriving, and it dries seven times faster than other fabrics," says Rossdeutscher.
羊毛能吸走表面的水分，这就能够防止尘螨和发霉，而且比其他纤维干燥7倍以上。
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