Thus only the metabolizable portions of a feedstuff can provide energy and essential nutrients.因此,只有饲料的可代谢部分可提供能量和必需的养分.Flours contain very small amounts of sugars which are metabolizable by yeast.面粉中一般都含有少量的糖,它们是酵母的代谢产生...
Imposing speed restrictions is easy, but forcing motorists to observe them is trickier.限制车速容易，但强制司机遵守这些限速规定就难办多了。The country's salvation lies in forcing through democratic reforms...拯救国家的希望在于强制推行民主改革。They pursue oth...
语言是将人类与动物区分开来的基本特征。Language is something which fundamentally distinguishes humans from animals.尸体保存完好，他的容貌特征清晰可辨。The body was found to be well preserved, his features easily recognizable.对外来者怀有敌意是人类和其他动物共有的特征。Hostility t...