More happily, raising our hand is also the symbol of knowing the correct answer in grade school, or signaling our willingness to volunteer for activities as we get older.
让人轻松点的例子也有：在学校里举手表明知道正确的答案。长大后，举手表示志愿参加某项活动。
On the basis of the visual variables of map symbol and the represent grade of map elements, this paper introduces the inference model of point symbol design in map design Expert System.
本文以地图符号的视觉变量和地图要素的表示等级为依据，详细介绍了地图设计专家系统中点状符号设计的推理模型。
Club as the status symbol of members should be a noble place with certain grade.
会所是一个高贵的地方，代表一定的档次，会员在社会上有一定的地位，是身份的象征。
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