9. prevent... from... 防止……;阻止……
◆ 瘋狂操練
The weather prevented the flight from leaving.
(惡劣的天氣使得飛機無法起飛。)
◆ 瘋狂實戰(zhàn)
A: We must prevent AIDS from spreading.
B: This disease is a serious problem.
A: 我們必須防止艾滋病的漫延。
B: 這種疾病是個很嚴重的問題。