六级The reasoning behind this saying is that low oil prices discourage investment in new production capacity, eventually shifting the oil supply curve backward and bringing prices back up as existing oil fields—which can be tapped at relatively low marginal cost—are depleted.

这一说法背后的理由是，低油价阻碍了对新产能的投资，最终使石油供应曲线向后移动，并随着可以以相对较低的边际成本开采的现有油田枯竭而使价格回升。

2017年6月阅读原文

六级Because there was slightly more matter, the collisions quickly depleted all the anti-matter and left just enough matter to create stars, planets, and eventually us.

因为物质稍微多了一点，碰撞很快耗尽了所有的反物质，只留下足够的物质来创造恒星、行星，最终还有我们。

2018年12月六级真题（第一套）听力 Section A

六级Our own decision-making abilities can become depleted over the course of the day causing indecision or poor choices, but choosing on behalf of someone else is an enjoyable task that doesn't suffer the same pitfalls.

我们自己的决策能力可能会在一天中耗尽，导致犹豫不决或糟糕的选择，但代表他人选择是一项令人愉快的任务，不会遭遇同样的陷阱。

2018年6月六级真题（第三套）阅读 Section C

六级And when we get off the plane, instead of being depleted, we feel recovered and ready to return to the performance zone.

当我们下了飞机，而不是精疲力竭，我们感到恢复和准备返回表演区。

2018年12月六级真题（第一套）阅读 Section B

四级Yet by her fourth year, my niece was worn out, depleted (耗尽) of the energy it took to work with a classroom of sweet but deeply needy children who pleaded to stay in her classroom when it was time to leave.

然而，到了我侄女四岁的时候，她已经筋疲力尽了(耗尽) 与一群可爱但急需帮助的孩子一起工作所花费的精力，他们恳求在该离开的时候留在她的教室里。

2012年12月大学英语四级真题(3)