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be caused by其中caused可以选用以下动词或词组的过去分词形式：bring,bring about,bring on,effect,effectuate,generate,induce,ingenerate,lead to,make,occasion,result in,secure,set off,stir (up),touch off,t...
得帮小赵
becausedby由。。。引起这个病症恐怕是由肠道感染引起的。thisillnessmightbecausedbyabowelinfection经调查,这次大爆炸是由工人违规操作引起的。accordingtotheinvestigation,thisbigexplosionwascausedbyworkers'operatingagainstregulations
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