The discovery of the cowpox vaccination let the danger of vaccination more less, and cost lest.牛痘术的发明使种痘的危险性更小, 花费也降到最低,故而很快在全世界推广开来.In nineteen century, Enligh doctor Pearson came to Macao to spread the cowpox vaccinati...
One should adapt oneself to the changed conditions.我们应当使自己适应变化了的情况.Change -- or the ability to adapt oneself to a changing environment - is essential to evolution.应变 —— 使自身适应环境变化的能力,是进化的基本需要....
A common basic structure used in the simulation is an insulating chunnel.在设计结构中,其基本结构是一倒置的内壁涂有绝缘材料的漏斗状通道.Insulating materials of this type are in two forms.这类保温材料有两种形式.The locking lever is composed of insulating material...