质子的质量几乎是电子的2,000倍。Protons are nearly 2000 times as heavy as electrons.质子是物质的基本粒子。A proton is an elementary particle of matter.中子和质子构成了原子核.The neutrons and protons form the core of the atom....
Ihre aktuelle Dumont - Publikation ist gewisserma? en die Fortsetzung des seinerzeit zum Bestseller avancierten Piper - Bandes.注意到细节的人马上就能得出这样的印象:有些事情不太对头.La plus belle qualit é de Pelletier , en fait , devenait parfois ...
Economics will not stop Europe's politicians complaining when jobs are lost in their own backyard...当本国人口在失业时，经济情况是无法让欧洲的政治家停止抱怨的。Backyard barbecue grills could be proscribed.里弄烤肉店会被勒令停业的.He had an assemblage of old...