高壓線
top prohibitions
例句：
When you are in a new company, the first thing you should do is to determine the top prohibitions there, something you should never touch.
剛到新公司的時(shí)候，你首先要做的就是摸清那里的高壓線在哪兒，有些事情是絕對(duì)不能碰的。
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