以防的例句（以防在句子中的用法）

• 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。
• The wood is treated with preservative to prevent decay. 这块木头用防腐剂处理过以防止腐烂。
• Always keep food covered to prevent contamination by flies. 时常把食物盖着以防苍蝇污染。
• We’ve installed an extinguisher next to the cooker in case there is ever a fire. 我们在炉旁安了一个灭火器,以防着火。
• prepared for any eventuality 以防万一
• Some insects have a natural camouflage which hides them from the attack of their enemies. 有些昆虫有一种天然的保护色可以防止敌人的袭击。
• The police barred the exits in an attempt to prevent the terrorist's escape. 警察堵住了各出口，以防恐怖分子逃跑。
• People bought in stocks of tinned goods in anticipation of a famine year. 人们买进大量罐头食品以防饥荒的一年。
• To prevent from speaking or crying out by using a gag. 堵住嘴塞住嘴以防说活或喊叫.
• Note down her telephone number in case you forget. 把她的电话号码记下来,以防忘记.
• ...the anti-personnel door that sealed off the chamber. 将会议室隔离起来以防外人进入的门