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。
You must not throw litter about.
别到处乱扔垃圾。
别到处乱扔垃圾。
We shouldn't throw litter about in public.
在公共场合我们不应该乱丢垃圾。
We must remember not to throw litter about.
我们必须记得别乱丢垃圾。
We should not throw litter about keep long fingernails and smoke etc. It's also very important.
我们不应该乱丢垃圾留长指甲和烟雾等也是非常重要的。
Students can not be allowed to throw litter about, Everyone must protect our environment and make it clean and tidy.
学生不可能允许投掷废弃物，大家必须保护我们的环境和使它干净和整洁。
Students can not be allowed to throw litter about, Everyone must protect our environment and make it clean and tidy.
学生不可能允许投掷废弃物，大家必须保护我们的环境和使它干净和整洁。
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