大学英语：重要词汇genocide n. 种族灭绝，斩尽杀绝

pesticide n. 杀虫剂

2. spree n. 狂欢，毫无节制的狂热行为

3.tragedy n. 悲剧，悲惨文学

如：Tragedy is a type of literature that involves death or disaster. 悲惨文学是一种文学体裁，常涉及死亡或灾难。

tragic adj. 悲剧的，悲惨的

4.let bygones be bygones. 过去的让它过去

如：It's time to let bygones be bygones. 忘掉过去吧。

5.be eager to 渴望

如：They are eager to go home after being isolated in an hole by bad weather for a long time.