A horse may stumble on four legs.马有四条腿,亦有失蹄时.I walked up one road , down another , expecting to stumble on something recognizable.我东投西奔, 指望撞见认得的东西.I make it into the darkness with only one stumble.我只是绊了一下，周围就变成了一片黑暗。If y...
Small as atoms are, they are not indivisible.原子虽小, 但并不是不可分隔的.The two processes are tightly coupled as a single indivisible process.这两个进程紧密结合,成为不可分割的单一进程.For many years the atom was believed to be indivisible.在过去有很多年原子一直被...
It is always best to choose organically grown foods if possible.如果可能，最好还是挑选有机食品。Some shops are bowing to consumer pressure and stocking organically grown vegetables.一些商店迫于顾客的压力，开始供应有机蔬菜。Many farms are jumping on the band...
They found a bacterium visible to the human eye.他们发现了一种肉眼可见的细菌。They have isolated the bacterium in its pure form.他们已经把细菌分离出来,使它们处于较纯的状态.A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源....