An arc of all seven spectral colors appearing in the sky opposite the sun as a result of the refractive dispersion of sunlight in drops of rain or mist.
由于雨滴或雾滴对阳光有折射分光作用，使空中太阳对面出现的一道有七色光谱的弧。
The drug is to be taken in drops.
这种药要一点点地服用。
Pour the oil in drops into the mixture.
将油滴入混合物。
It is impossible to suddenly appear, which is the result accumulated in drops, and anyone who wants meet with success must go forward step by step.
成功不会突然降临，它是一点一滴积累起来的结果，任何人要想成功必须一步一步地前进。
It is impossible to suddenly appear, which is the result accumulated in drops, and anyone who wants meet with success must go forward step by step.
成功不会突然降临，它是一点一滴积累起来的结果，任何人要想成功必须一步一步地前进。
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