account for sth:be the explanation of sth; explain the cause of sth 作某事物的解释; 解释某事物的原因:His illness accounts for his absence.他因病缺席.
lead to sth:have sth as its result 导致某种结果:This misprint led to great confusion.这个印刷错误造成很大的混淆.
result in sth:have a specified effect or consequence 产生某种作用或结果:Our efforts resulted in success/failure.我们的努力终於成功/失败了.