大家都搜：
恒星寿命
1、lifetime warranty───终身保修
2、lifetime movie───终身电影
3、lifetime education───生涯教育
4、lifetime value───终身价值
5、lifetime earnings───终身所得
6、curtate lifetime───缩短寿命
7、lifetime employment───[劳经]终身就业；[劳经]终身雇用
8、lifetime membership───终身会员制
9、lifetime───n.一生；寿命；终生；使用期；adj.一生的；终身的
1、The sun is thought to be about 5 billion years old and halfway through its lifetime as a main sequence star.───太阳现在的寿命大约是50亿年，作为一颗“主序”恒星，也只是过了生命的一半。
2、The sun, a medium-size star, is about halfway into its total lifetime of 10 billion years.───太阳这颗中等大小的恒星在它一百亿的人生中大约刚走到一半。
3、bag down? Some animals were meant to carry each other, to live symbiotically of a lifetime. star-crossed lovers, monogamous swans.───放下背包，有些动物生来就要相互背负，以求生存，共生共栖，匆匆一世，好像灾星下相爱的恋人，一夫一妻制的天鹅。