C 三角形; 三角形物体 geometric figure with three straight sides and three angles; thing shaped like this
C 三人一组; 三角关系 situation involving three people, ideas, opinions, etc.
句型例句
He drew a right triangle.他画了一个直角三角形。
The place is a cobbled triangle.这个地方是一块铺石子的三角地。
Finance, fashion and flourish—the triangle upon which the store was built.资金充裕、款式新颖和装潢华美曾是那家商店的三大支柱。