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今天我們要學的詞是 drill. Drill 演習。Fire drill 火災演練。Military drill 軍事演習。Millions of people in California participated in an earthquake drill last week. 美國加州上星期有成百上千萬人參加了地震演練。埃博拉病毒在美國本土的出現，讓很多醫院都進入備戰狀態。Some hospitals have had emergency drills to make sure they know what to do if an Ebola patient shows up at the door. 一些醫院進行緊急演練，確保埃博拉患者一旦出現，立即啟動必要程序。好的，今天我們學習的詞是 drill, drill, drill...
