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.
我们能够种更多的树，使我们的环境更健康更干净。
We can plant more trees to make our environment greener and cleaner.
我们能够种更多的树，使我们的环境更健康更干净。
We can plant more trees to make our environment greener and cleaner.
应用推荐