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 ...
她听到雾中传来隆隆的枪炮声。She heard the sound of the guns thundering in the fog.人们经常能听到从东边很远的地方传来的隆隆枪炮声。One could often hear, far to the east, the grumble of guns.彼德听见了枪炮声。Peter heard the sound of gunfire....
They were taken to hospital suffering from smoke inhalation.他们因吸入大量烟尘被送往医院。Mr Martin was taken out of his car at gunpoint.马丁先生被人用枪指着从车里带了出来。In prison they'd taken away his watch and everything he possessed.在监狱，他们把他的...