Millions were spent to hammer away at the sales resistance of voters.花费数百万元以消除选民的反感.All his recent letters hammer away at the questions of technical innovation.他最近的一些来信都一再谈到技术革新问题....
云是由凝聚的水蒸气构成的.Clouds are formations of condensed water vapour.同质成核作用之所以可能,是由于蒸汽中分子凝聚的统计起伏.Homogeneous nucleation is made possible by statistical fluctuations among molecular aggregates in the vapour.这个系统确定凝聚的大小和分布.The sys...