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 ...
吸烟会引起细胞增生。Smoking triggers off cell proliferation.不久后, 元素的这个增生开始冲击化学家们.Before long, this element proliferation began to frustrate the chemists.泪腺和唾液腺淋巴细胞增生,可引起两侧腺体无痛性肿大.Proliferation of lymphocytes in lacrimal and saliva...
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....