Ten or twenty years ago, you could buy milk in returnable, refillable glass bottles, and many people recycled voluntarily.

十几二十年前，你买到的牛奶会装在可回收、可重复灌装的玻璃瓶里，许多人也自愿做回收工作。

youdao

Ten or twenty years ago, you could buy milk in returnable, refillable glass bottles, and many people recycled voluntarily.

十几二十年前，你买到的牛奶会装在可回收、可重复灌装的玻璃瓶里，许多人也自愿做回收工作。

youdao