原创教案、课件每篇1元-20元
.
我们的口号就是:防止污染,减少损耗,节约资源,清洁卫生。
3. Poor
sanitation
can cause you to get sick. Prevent illness by keeping yourself and your surroundings as clean as possible.
糟糕的卫生环境会使你生病。请尽可能的保持个人和个人环境的卫生以预防疾病,。