Such is the role of chance in the history of life on our planet. 这就是机遇在地球生命历史中 所扮演的角色
Yet these glaciers play an essential role in the water cycle. 然而这些冰在水循环中是必不可少的
We know neither their richness nor their role. 我们竟对它的富饶和角色一无所知
Every species has a role to play, 每个物种都有其所扮演的角色
In which every being has a role to play... 在平衡中 一切都有属于自己的角色
Joey: Hi, I'll be reading for the role of Mercutio. 我来试演 "马丘修" 角色的。
Ross: Look. The role of man number three will not be played by Vic Shapiro. We came on the wrong night. 看看“三号男演员不是由维克·夏皮罗来演”,看来我们来错时间了啊。
My role is to be sly, obsequious and without scruples. 就该诡计多端, 阿谀逢迎, 行事无孔不入
They taught me that each man has a role to play. 他们教给我每个人都有自己该扮演的角色
And these extremofiles play another important role in this cave. 这些嗜极生物还在这个洞中 扮演着另一个非常重要的角色