鸟类 、 爬虫及昆虫是卵生的.Birds, reptiles and insects come from eggs.哺乳类起源于中生代宛若原始的爬虫类.Mammals arose from a fairly primitive reptile in the Mesozoic era.它们就把所有目力见得着的鸟儿,和所有还没入蛰的爬虫, 都引得注意起来.They attracted the attention of every bird ...
Snowflakes were swirling in the air.天空飘洒着雪花.The paper on the walls was pale gold, embossed with swirling leaf designs.墙纸是淡黄色的，上面饰以漩涡状叶片凸起图案。She smiled, swirling the wine in her glass.她微笑着，旋动着杯子里的葡萄酒。...