脚癣是由真菌感染引起的。
死亡是由烟尘吸入导致窒息引起的。
这些症状也许是由病毒感染引起的,而与寄生虫无关。
These symptoms may be referable to virus infection rather than parasites.
And according to Klawans and others, ritual impurity arises from physical substances and states which are not in themselves sinful.
据克洛文和其他人所说,仪式的不洁是由自身有罪的,物质和状态引起的。
How can we prevent murderous schoolyard violence in children who have access to weapons,poor parental supervision, and a mean streak?"
如何防止校园暴力,这些暴力事件通常是由掌握武器,缺乏父母监管,或受到教唆的孩子引起的“
We know now that it's caused by a related virus, called vaccinia, remember the virus that causes smallpox is called variola.
我们现在知道这病由一种相关的病毒引起,这种病毒叫牛痘病毒,想想天花病毒也被叫做牛痘病毒
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