以防用英语怎么说？

以防

• in case

例句

• Trees should be well protected from the cold during winter. 冬天要保护好树木以防冻坏。
• He took a dictionary to hold down the test papers for fear that they might be blown away by the wind. 他拿了本词典压住试卷, 以防被风吹走。
• The test questions are kept secret so as to prevent cheating. 考试题保密以防作弊。
• The wall was built along the river in case of floods. 沿河筑了防护墙以防洪水。
• Although the sun was shining,I took an umbrella to be on the safe side. 虽然有太阳,但我仍带了伞以防万一。
• He keeps dogs to ward off unwanted visitors. 他养了狗以防不速之客。
• We didn't want to open the garden gate in case their dog made for us. 我们不想打开花园的大门, 以防他们的狗向我们扑过来。
• Never walk behind a horse in case it lashes out. 绝对不要跟在马后面, 以防它突然猛踢。
• Take warm clothes in case the weather is cold. 穿上暖和的衣服, 以防天冷。
• Keep the window closed in case it rains. 把窗户关好, 以防下雨。