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3句英文任你選
I'm afraid you'll have to wear an overall. It's a hygiene requirement.
請穿上工作服，這是衛生上的要求。
That's dangerous. Please keep off.
那里很危險，請勿靠近。
It's very important not to touch the machinery.
不要亂摸機器很重要。
半個句型要記牢
keep off (遠離，避開)
Tip:
keep off和keep out都有"避免，逃離"的意思，但用法有別: keep off 意思是"(使)不接近;擋開，避開，遠離如 He drew the curtain to keep the sun off. (他拉上窗簾以遮住陽光。) ;keep out則表示"(使)不進入，使其等在外面如 Warm clothing helps to keep out the cold. (保暖的衣服可以御寒。)
