企源知识库

Building walls are also frequently used for advertising. An outdoor advertisement must present its message in very few words so that it can be read quickly by passersby or motorists.
【正确答案】：建筑物的墙壁也经常用来涂写广告。户外广告的用语必须简单明了,以便使过路行人或汽车驾驶人一目了然。