这些试验的有效性已显得令人怀疑.The tests have been shown to be of dubious validity.他们正在检测这种草药作为杀菌剂的有效性.They're doing tests to evaluate the effectiveness of this herb as an antiseptic.蛋白质还可以作为检测实验治疗有效性的标识物.They can serve as markers...
The petrel came winnowing in from afar on the sea.海燕从遥远的地方振翼飞来.He's a stormy petrel.他是个坏星宿.black petrel黑叉尾海燕Sinclair Lewis was stormy petrel in his life as in his books.辛克莱·刘易斯在他的生活中也像他的书中一样是个制造麻烦的人....
She didn't hesitate to tell intrusive photographers to "naff off".她毫不客气地叫那些烦人的摄影者“滚开”。The new measures are aimed at cutting back on intrusive telephone solicitations.新措施旨在减少不请自来的电话调查。Staff are courteous but never in...
马克思回信给恩格斯说,他的赞誉对自己的鼓励很大.Marx wrote back to say that Engels'praise had greatly encouraged him.马克思和恩格斯科学地预言了资本主义的灭亡.Marx and Engels scientifically forecast the collapse of capitalism.恩格斯懂好几门外国语, 例如英语 、 法语和意大利语.Engels ...