Heavy rain contains more water volume in the form of large drops. 大雨中含有較多水分并以大粒子形態(tài)出現。
He says nanometer-sized particles behave differently in the body and the environment compared to larger particles. 他說(shuō)比起較大粒子，在身體和外部環(huán)境中納米大小的粒子表現各不相同。
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