be exposed to和be exposed by意思区分?

问题描述:

be exposed to和be exposed by意思区分?
翻译句子This corrupt official was exposed by a worker who happened to see him on line at a meeting smoking that he couldn't afford . Doesn't this speak for the usefulness of modern technology?

was exposed by 这个是被暴露 被举发
be exposed to 是被暴露于.(地方)句子翻译呢?那名受贿官员被一个工作人员揭发,那名人员碰巧在网上见到他在开会上抽着他负担不起的烟。 难道这不是说明了现代科技的无用之处?