分类学上的种是根据表型不连续性而不是根据互交可孕性来确定的.Taxonomic species are defined on phenetic discontinuities, not on interfertility.把无融合生殖小种 ( 无性种 ) 作为分类学上的种来承认,这点具有更大的迷惑性.The temptation to recognize apomictic microspecies ( agamospecies ) a...
Water in the engine compartment is sucked away by a hose.发动机舱里的水由一条软管抽走。In 1941, the train would have been pulled by a steam engine.1941年，火车本可以由蒸汽机车拉动。Two of them got out to fiddle around with the engine.其中两人下车鼓捣引擎。...
I've had two runners-up medals with Monaco and AC Milan, but I hope it will be third time lucky and I get a winners' medal with Rangers.我为摩纳哥队、AC米兰队效力时两次都只拿到了亚军，但是事不过三，我希望能为流浪者队拿下一个冠军。The jury is[are] about to ...
…a veterinary surgeon who specialises in the treatment of cage birds.专门诊治笼养鸟类的兽医He specialises in the mechanics of locomotion.他专攻运动力学。The club specialises in videoing its student golfers to correct their faults.俱乐部专门为高尔夫...
For this old trouper there is still no business like show business.对这位老剧团演员来说仍然是娱乐性行业最好.Thanks for helping, you are a real trouper.谢谢你的帮助, 你真是信得过的人....
Objective: Discussion of the clinical value percutaneous endoscopic gastrostomy ( PEG ).目的: 探讨经皮内镜下胃造瘘术 ( PEG ) 的临床应用价值.Objective To discuss the clinical value of percutaneous endoscopic gastrostomy ( PEG ).目的探讨经皮内镜胃造瘘术 ...