The Sahara Desert is arid.撒哈拉沙漠非常干燥.A petroglyph emerges from the Sahara Desert.这是撒哈拉大沙漠里的一块岩石画。The Sahara Desert is a natural barrier between North and Central Africa.撒哈拉沙漠是北非与中非之间的天然屏障....
其它酶谱间均存在很大的差异.And there are a lof of differences between the other ferns.RC细胞还有异常高的磷酸醋酶活性,而且它的同工酶谱也与大鼠肌肉细胞明显不同.The isoenzyme pattern of the RC cells is quite different from the rat muscle cells.EST的PAGE酶谱显示出较高的多态性,各品种之间差...
他伸出自己长长的胳臂,抓起了搭在椅子上的那件皱皮疙瘩的背心.He thrust out his long arm and snatched his wrinkly vest from a chair.皱皮木瓜又分实生 、 野生和栽培品种.Cockle papaya is also the health, wild and cultivated varieties.你老了,皱皮柑!Get that fiddler here....
多项调查一致显示，男性认为天黑后在大街上行走是安全的。比如，参见欣德朗和加罗法洛（1978）。Surveys consistently find that men report feeling safe on the street after dark. See, for example, Hindelang and Garofalo (1978)....
Stars appeared everywhere, spinning round and round, faster and faster.满眼金星乱转，而且越转越快。The spinning turbine creates a vacuum.旋转的涡轮形成了一块真空区域。They do their own cooking, spinning, and woodworking.他们自己做饭，纺线，做木工活。...