Though the AD aims to convince people they ought not litter, the repeated images of people littering may promote littering by convincing viewers that everybody does it.

尽管广告的目的是劝说人们不乱扔垃圾，但一遍遍重复的乱扔垃圾的场景使观众意识到每个人都在这么做。

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I joined and volunteers group four “Green Olympics”. We spread leaflets in our schools, prevent people from littering, or organize environment-protecting activities.

我加入了一个志愿者小组，为“绿色奥运”出自己的一份里，我们在学校里散发传单，制止人民乱扔垃圾，组织环保活动。

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People have to stop littering. We have to respect our surroundings. We must become friends of the earth.

人们必须停止乱丢垃圾。我们必须尊重我们的环境，我们必须成为地球的朋友。

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Rubbish and graffiti often go hand-in-hand but spray painting pavements could stop people littering - at least that is the theory a Cardiff student is putting to the test.

BBC: Footprint art on pavements to tackle litter problem

Gary Lincoln-Hope, chief executive officer at X-For, agreed it had been a success and people were more aware of the consequences of littering.

BBC: Basildon Council litter patrols stop after contract ends

Scroll down to "Custom, " and from there you can block specific people from seeing your Timeline post, and consequently littering it with inane comments.

CNN: Dueling online over 'Call Me Maybe'