哺乳动物皮毛的功能在于使身体保温.The function of a mammal's fur is to insulate the body.斯皮茨狗科的白色或奶油色皮毛的西伯利亚狗.Siberian breed of white or cream dog of the spitz family.长着丝状蓝色皮毛的澳大利亚品种小狗.Australian breed of toy dogs having a silky blu...
这些肖像作品线条简单流畅，毫无繁琐之感。The portraits are simple, uncluttered compositions.镶有嵌板的墙上挂满了肖像。The panelled walls were covered with portraits.不幸的是这些肖像都是骗人的。Unfortunately the portraits were frauds....
...complex arithmetical formulae.复杂的算术方程式It is useful to have checks against arithmetical errors.为防止算术计算中的错误,加以验算是有益的.But the Chinese were always strong in arithmetical techniques and calculations.但中国人在算术技能和计算方面实力很强.Many...