That was sporting of him. Or should I say cowardly.他风格真高。或者我是否应该说他很懦弱？This was a cowardly thing to do.做这种事是懦弱的行为。He was weak, cowardly and treacherous.他软弱、胆怯、奸诈。...
There’s something cowardly and ignoble about such an attitude.这种态度有点怯懦可鄙。They felt he had been cowardly in manipulating the system to avoid the draft.他们觉得他太没种，居然钻漏洞逃避服役。...a cowardly act of violence.懦弱的暴力行为That was sport...
There are just four kinds: adenine, thymine, guanine and cytosine.只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.The DNA base composition is 32.6 - 33.1 mol % guanine plus cytosine.DNA(脱氧核糖核酸)的G+C 摩尔百分含量为32.6—33.1.It is a layer of guanine ...
The Spanish Steps were crowded with the sellers of grotesque caricatures.西班牙阶梯上挤满了出售荒诞漫画的人。The boys amused themselves by drawing caricatures of their teacher.这些男孩画他们老师的漫画来取乐.He does very funny caricatures of all his frie...