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3句英文任你选
I'm afraid you'll have to wear an overall. It's a hygiene requirement.
请穿上工作服，这是卫生上的要求。
That's dangerous. Please keep off.
那里很危险，请勿靠近。
It's very important not to touch the machinery.
不要乱摸机器很重要。
半个句型要记牢
keep off (远离，避开)
Tip:
keep off和keep out都有"避免，逃离"的意思，但用法有别: keep off 意思是"(使)不接近;挡开，避开，远离如 He drew the curtain to keep the sun off. (他拉上窗帘以遮住阳光。) ;keep out则表示"(使)不进入，使其等在外面如 Warm clothing helps to keep out the cold. (保暖的衣服可以御寒。)
