We shouldn't spit in public places or throw litter about.
我们不应该在公众场合随地吐痰，乱丢垃圾。
在公共场合吐痰是粗鲁的。
不要在公共场所随地吐痰。
不要随地吐痰，在公共场所。
It's bad manners to spit in public.
在公共场合吐痰是不礼貌的。
不要在公共场所随地吐痰。
It's considered bad manners to spit in public.
在公共场合吐痰是不礼貌的。
It's considered rude to spit in public places.
在公共场所吐痰被认为是粗鲁的行为。
Cover your mouth if you cough. Don't spit in public.
如果你咳嗽时，要用你的手盖住你的嘴。不在在公共场所吐啖。
Secondly, we shouldn't spit in public or litter things.
其二，我们不应该在公共场所随地吐痰或乱丢杂物。
In many countries it is considered rude to spit in public.
在许多国家，当众吐痰属不雅行为。
A lot of people throw rubbish everywhere. They spit in public.
很多人乱扔垃圾，在公共场合随地吐痰。
We shouldn't leave rubbish everywhere and spit in public places.
我们不应该在任何地方扔垃圾和在公共场所随地吐痰。
We shouldn't leave rubbish everywhere and spit in public places.
我们不应该到处乱扔垃圾和随地吐痰在公共场所。
We shouldn't leave rubbish everywhere and spit in public places .
我们不应该把垃圾无处不在，在公共场所吐痰。
It is not good to spit in public places, such as in the library, in the class.
这是不好随地吐痰在公共场所，如在图书馆中的类。
We have realized that it is wrong to spit in public places, such as in a library, in a class , in a hallway and so on .
我们已经意识到在公共地方乱丢垃圾是错误的，例如：在图书馆、在教室、在走廊等等。
People may spit in public, but it is an accepted cultural habit, and doesn't happen that often nowadays. Younger people almost never do it.
以前人们可能会随地吐痰，这是个可以接受的文化习俗，但是现在没有了，年轻人大部分不会这么做了。
A lot of men do this almost subconsciously. Spitting is very crude and not too pretty to look at. Do not spit in public unless you want to look like you were raised in a sewer.
好多人无意识地这样做，吐痰是极其粗俗的，且不好看，不要在公开场面吐痰除非你让人觉得你没教养。
We shouldn't leave rubbish everywhere and spit in public places, we mustn't pick the flowers or step on the grass in public, we mustn't throw the garbage into the river and so on.
我们不应该把垃圾到处吐痰在公共场所，我们不能摘花或步骤在草地上在公开场合，我们不应该把垃圾扔进河里，等等。
We should plant more trees and we should prevent those factories from pouring waste water into rivers, lakes and fields. We shouldn't leave rubbish everywhere and spit in public places .
我们应该种更多的树，我们应该阻止那些工厂从浇注废水流入河流、湖泊和领域。
We should neither throw litter onto the ground nor spit in a public place.
我们即不应该把垃圾扔到地上，也不应该在公共场所吐痰。
We should neither throw litter onto the ground nor spit in a public place.
我们即不应该把垃圾扔到地上，也不应该在公共场所吐痰。
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