雅思写作常用词汇：疫苗
<p> <span word="vaccine">vaccine</span></p><p> - <span word="eg">eg</span>: <span word="Testing">Testing</span> <span word="on">on</span> <span word="animals">animals</span> <span word="has">has</span> <span word="helped">helped</span> <span word="develop">develop</span> <span word="vaccine">vaccine</span> <span word="for">for</span> <span word="many">many</span> <span word="life">life</span> <span word="threatening">threatening</span> <span word="diseases">diseases</span>.;</p><p> <span word="breeding">breeding</span> - <span word="captive">captive</span> <span word="breeding">breeding</span>，</p><p> <span word="breeding">breeding</span> <span word="ground">ground</span>;</p><p> <span word="vivisection">vivisection</span> - <span word="vivisectionist">vivisectionist</span></p><p> </p>
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