Sign around us.
With more rules existing, signs are becoming common to everybody.
It is easy for us to find the "no somoking" signs on the underground and in theatres.
Moreover, there are signs stand for different directions on the road and distinct bans for every circumstance.
For example, there may be a "throw in" sign beside a rubbish bin, and a "dangerous" sign on the side of a deep swimming p ool.
在我们周围的标志
随着越来越多的规则的存在，标志越来越普遍。
我们很容易在地铁和剧院里找到“禁止吸烟”的标志。
此外，道路上有不同方向的标志和不同的禁令。
例如，垃圾桶旁边可能会有“扔进去”的标志，深游泳池边上可能有“危险”标志。
