Students are asked to keep the school clean and tidy.Litter baskets have been placed in the school,but students still throw rubbish everywhere.是什么意思_Students are asked to keep the school clean and tidy.Litter baskets have been placed in the school,but students still throw rubbish everywhere.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句