They also learned that polystyrene takes a very long time to decompose, meaning that it can hang around in landfills for years and years.是什么意思_They also learned that polystyrene takes a very long time to decompose, meaning that it can hang around in landfills for years and years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句