1.topple v. (使)失去平衡而坠落,倒塌,倒下;打倒;推翻;颠覆
例句:He just released his hold and toppled slowly backwards.
他刚一松开手就缓缓向后倒下 。
2.precedence n. 优先;优先权
例句:Have as much fun as possible at college, but don't let it take precedence over work.
在大学要尽情娱乐,但不要把它看得比学习还重要 。