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1·He was arrested for littering.

他因乱扔垃圾被拘留。《牛津词典》

2·There are laws against littering and against making the air and water dirty.

法律禁止乱扔垃圾，禁止污染空气和水。

3·McDonald's, Greggs, KFC and Subway need to do more to exclude littering by their customers.

麦当劳、格雷格斯、肯德基和赛百味需要采取更多措施，杜绝顾客乱扔垃圾。

4·Eating in public is inappropriate and could lead to littering.

在公共场所吃东西是不合适的，还可能会导致乱丢垃圾的问题。

5·The sign No Littering shows that we mustn't throw rubbish in the park.

“禁止乱扔垃圾”的标志表明我们不能在公园里扔垃圾。

6·No littering, keep the floor clean.

不要乱丢垃圾，请保持地面清洁。

7·Alice: Such as littering and graffiti.

例如乱扔垃圾，乱写乱画。

8·Can't you read the No Littering sign?

你没有看到那块“不许乱扔杂物”的告示牌吗？

9·No littering here.

不要乱丢垃圾。

10·Do you prevent your parents from littering?

你会阻止父母乱扔杂物吗？

(1)no littering请勿乱扔废弃物