Flu virus can live on shared objects ( doorknobs, keyboards, counters, etc ).病毒可以在共用物品表面生存 ( 门把手 、 键盘 、 柜台等 ).Counters can, of course, be made highly directional by the use of external collimation.当然可以利用外部准直法来提高计数器的方向性.H...
他指着书架说,“我已经从他那里买了不少书了”。He gestured at the shelves. "I've bought many books from him."他毕恭毕敬地把小说放回了正面装有玻璃的书架。He reverentially returned the novel to a glass-fronted bookcase.她看着乱七八糟地塞在书架上的那些书。She looked at the books ja...