Draw the floss backwards and forwards between the teeth.将牙线在齿间来回拉动。He controlled the car until it was pointing forwards again.他稳住车子，直到它又朝前开去。He stood a few moments, rocking back and forwards on his heels.他站了一会儿，踮着脚跟前后摇晃。...
...people travelling backwards and forwards to and from London.往返于伦敦的人He stood a few moments, rocking back and forwards on his heels.他站了一会儿，踮着脚跟前后摇晃。She fell forwards on to her face...她一头栽倒在地。Space scientists and astrono...
Embryo has most commonly eitht genetically identical haploid nuclei.胚囊,普通具有8个遗传上相同的单倍体核.An exact multiple of the haploid number is called euploid.确切的单倍体数目倍增被称为整倍体.Autotetraploid An autopolyploid that has four times the h...
媒体一直把我们描绘成抢劫犯、贩毒者和歹徒。The media persists in its portrayal of us as muggers, dope sellers and gangsters.(对吸毒或贩毒者)的惩罚是严厉的.Penalties can be severe, even for having a small amount on your person.如果我可以看看这些文件, 我就可以追踪那些贩毒者.If I ...