中英释义：
重点词汇
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不准
not allow; prohibit; forbid; not be supposed to do; forbidden; no
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乱扔垃圾
litter; throw litter about; drop litter carelessly
不准
not allow; prohibit; forbid; not be supposed to do; forbidden; no
乱扔垃圾
litter; throw litter about; drop litter carelessly