Students team with a certain time plan and echelon .
具有一定时间规划和梯队的学生群体。
Let me see your other upper echelon .
让我看到你的上梯队。
The discovery of offshore oil could thrust the country into the top echelon of oil-exporting nations
近海油田的发现能让该国跻身石油出口国顶级梯队之列。
But shawn noren of the university of california at santa cruz has found evidence that echelon swimming is also a form of infant carrying .
但是位于圣克鲁兹的加利福尼亚大学的肖恩诺尔发现这种梯队状游动也是运送孩子的一种形式。
The big appetite for risk that existed in the upper echelon just two years ago is fading , the survey found , with around 44 % of the country 's wealthiest looking to spread their risk .
