Do not litter in your daily life.

在你的日常生活中，不要随意扔垃圾。

Do not litter. Throw your rubbish into the refuse bin.

把垃圾放在垃圾桶里并不难。

Do not spit. Do not litter. Do not throw rubbish out the window. Rubbish should be put in designated places.

一切日常用具要干净整齐有序，保持室内外清洁整洁美观，不准往窗外投弃物品，垃圾要倒在指定地方。

Do not smoke indoors, including in the teaching building, dormitory or other public places. Do not litter cigarette butts when smoke outdoors.

室内严禁吸烟，包括教学楼、宿舍楼等公共场所，室外吸烟不乱扔烟头；