The pertinent siloxane compounds contain two silicon hydride bonds.所说的硅氧烷组合物中,含有两类硅氧键.Forming conditions and physical and chemical characteristics of tin hydride are discussed.论述了锡氢化物的形成条件和物理化学特征.What we've done is ...
Can I bum a cigarette off you?可以向您要支烟吗?Why don’t you stop behaving like a bum and get this place cleaned up?你不要再像一个懒鬼的样子，赶紧把这地方收拾一下好吗？He looks like a bum who's been drowning his sorrows in sleazy dives.他看起来象个游手好闲之辈,...
They knock around on weekends in grubby sweaters and pants.他们周末穿着邋遢的毛衫和裤子到处闲逛。His white coat was grubby and stained.他的白色外套污迹斑斑，简直脏透了。Look at your grubby hands!看你那双脏手!...