有____条对称轴的四边形是等腰梯形,有____条对称轴的四边形是长方形.
在生活中,我们常常需要确定物体的位置。怎样描述物体的位置呢?
be known as; make up; as well, link (...) to; break away from;
look around; to one's credit; under construction