1.nerve agent 神經性毒劑
例句:The shells contained an experimental chemical weapon, a nerve agent.
炮彈含有實驗性化武神經性毒氣。
2.come out 出現;出版
例句:The truth is beginning to come out about what happened.
真相開始逐漸浮出水面。
3.in turn 轉而;輪流
例句:The girls took it in turn to wipe down the tables after meals.
女孩子們飯后輪流擦桌子。
4.back down 放棄;讓步
例句:The United States had no intention of backing down in its bitter row over farm subsidies
美國無意就激烈爭吵的農產品補貼問題作出讓步。