你必须禁止践踏草坪.
You must keep off the grass.
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禁止
prohibit; bar; ban; forbid; disallow; veto; outlaw; interdict; enjoin; preclude; inhibit; suppress; proscribe; prohibitive; forbidden; prohibitory; prohibition; interdiction; proscription; against
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践踏
tread on; trample; stamp on; make havoc of; underfoot
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草坪
lawn; grass; green; greensward

中英释义: