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- Although natural hosts are birds, the avian influenza viruses are known to cross species barriers to infect other mammals, including humans. 尽管鸟类是自然宿主,但禽流感病毒能够跨物种感染其它哺乳动物包括人类。
- With plants we have conclusive evidence that the sterility of crossed species must be due to some principle. 在植物方面,我们已有确实的证据,表明杂交物种的不育性一定是由于某种原理而起。
- It is rash to cross the street without looking both ways. 不朝两边看看就穿马路是莽撞的。
- Cross and angry words in family grate upon the ear. 不高兴与生气的话在一个家庭里令人不愉快。
- A mule is a cross between a horse and an ass. 骡是马和驴交配而生的杂种。
- The Red Cross dealt out food to hungry soldiers. 红十字会把食物分发给饥饿的士兵。
- Do wolves belong to the canine species? 狼是犬科动物吗?
- This cross marks the spot where she died. 这个十字符号标明她死去的地点。
- He made expiation for our sins on the cross. 他在十字架上为我们赎了罪。
- We should do our best to save endangered species. 我们应该竭尽全力挽救濒于灭绝的生物。
- Mind out for the traffic when you cross the road. 过马路要注意来往车辆。
- This rare bird has become an endangered species. 这种珍禽已成为濒临灭绝的物种。
- Passengers mustn't cross the rails. 乘客不得横过铁路。
- He was wearing a strange species of hat. 他戴着一种奇怪的帽子。
- You had better cross out the last name. 你最好把最后一个名字划掉。
- Don't be cross with the child for being late. 不要对迟到的孩子发脾气。
- On maps, a cross is the symbol for a church. 在地图上,十字符号代表教堂。
- Cross your heart; do you really? 你发誓,你是真的吗?
- There are many species of chrysanthemum. 菊花品种很多。
- I hope I never cross her path again. 但愿我永远不再遇见她。