预防有1.defend 2.guard against 3.prevent1.defend 防御, 防守, 保卫(国家等)以行动, 语言或文字替...辩护或答辩defend the motherland 保卫祖国The accused man had a lawyer to defend him. 被告有一律师为他辩护。习惯用语defend against 保卫; 抵抗defend from 保护, 保卫(使不受伤害)参考词汇defend guard protect shield preserve 都含“保护”、“使安全”的意思。defend指“保卫”、“防御”, 应用范围很广, 对象可以是具体的, 也可以是抽象的, 如:defend oneself against enemy 防御敌人。guard 指“注意观察、戒备, 以免受可能的攻击或伤害”, 如:guard a coastline 守卫海岸线。protect 指“保护...以免遭受危险或伤害等”, 如:protect the children from harm 保护儿童免受伤害。shield 指“保护、保卫...免受惩罚或伤害等”, 如:shield one's eyes against the glare of the sun 保护眼睛不受强烈的阳光伤害。preserve 指“防护、保存...免被分解或腐烂”, 如:Salt preserves food from decay. 盐能防止食物腐烂。2.guard against 提防, 预防3.preventvt.防止, 预防阻止[挡], 制止; 妨碍(from)[古]领先; 先做; 预先应付(问题)【宗】引领prevent diseases 预防疾病What [Who] prevented him from going [prevented his going, prevented him going]? 什么事[谁]阻止了他去?习惯用语prevent...from 使...不做某事, 阻止...做某事参考词汇prevent forestall preclude 都含“阻止”的意思。prevent 指“采取预先行动或用障碍物使不发生或停止”, 如:prevent diseases 预防疾病。forestall 指“先采取行动以阻止别人做某事”、“先发制人”, 如:Try to forestall their questions. 尽量不让他们问问题(作到先发制人)。preclude 指“阻止某人做某事”、“使不可能发生某事”, 如:The bad weather precluded me from attending the meeting. 恶劣的天气使我不能出席会议
预防: 1. to prevent2. to take precautions against3. to protect4. to guard against例句与用法: 1. 请吃些预防药吧。 Please take some preventive medicine now. 2. 这种疫苗用以为全体居民预防传染病. The vaccine was used to protect the whole population against infection. 3. 预防胜于治疗（治病不如防病）。 Prevention is better than cure. 4. 我们不得不采取预防措施。 We had to take preventive measures. 5. 该报道对缺乏安全预防措施一事严加指责. The report was scathing about the lack of safety precautions.
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