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- Because the Cenozoic saw the expansion of warm-blooded creatures like ourselves, it is also termed the age of mammals. 因为新生代出现大量的像我们人类一样的热血动物，所以这个时代也称为哺乳动物时代。
- The newest era is called Cenozoic beginning at 65 million years ago. It is the age of Mammals. 最新的一个代叫做新生代，它是从距今6500万年的时候开始的，这个时期是哺乳动物的时代。
- Because the Cenozoic saw the expansion of warm-blooded creatures like ourselves, it is also termed the age of mammals . 因为新生代出现大量的像我们人类一样的热血动物，所以这个时代也称为哺乳动物时代。
- The average age of the boys in this class is fifteen. 本班男生的平均年龄是十五岁。
- I don't think he looks his age of seventy. 我感到他看起来不像70岁的人。
- The age of majority is eighteen. 成年的法定年龄是18岁。
- Whales fall under the class of mammals. 鲸属于哺乳类动物。
- He ran away from home at the age of thirteen. 他十三岁那年就离家出走了。
- At the age of thirty, Mary began to lose colour. 玛丽在30岁的年纪就红颜渐逝了。
- Quite similar to that of mammals. 有点儿近似于哺乳动物的胎生。
- She was orphaned at the age of ten. 她在十岁时成为孤儿。
- It is an essential nutrient in the diet of mammals. 它是哺乳动物重要的营养物质。
- My father retired at the age of 60. 我父亲六十岁时退休了。
- Is each kind of mammals capable to produce milk? 是否能生产乳汁就是哺乳类动物呢？
- My grandmother got married at the age of seventeen. 我的祖母十七岁就结婚了。
- Some examples of mammals are man, pigs and dogs. 一些哺乳类动物的例子是人类，猪和狗。
- He was already balding at the age of 25. 他25岁就秃顶了。
- Cole popped off at the age of twenty. 科尔在二十岁时突然死去。
- He lived to be [to the age of]80. 他一直活到了80岁。
- The average age of the students is 19. 学生的平均年龄是19岁。
