GbEng
她有一条用三角形蓝绸子做的围巾。 She has a scarf made of a triangular piece of blue silk.
比较一下这些三角形的面积. Compare the areas of these triangles.
他用红笔画出三角形. He outlined the triangle in red.
我被教会三角形两个边的和大于第三个边。 I was taught that two sides of a triangle were greater than the third.
尼罗河三角洲土地肥沃。 There are fertile fields in the Nile Delta.
三角形的三角之和等于180°。 The angles of a triangle total 180.
竖琴一种有一个通常系有四十六根长短不一的琴弦的直立的开放三角架、弹奏时用手指拨动琴弦的乐器 An instrument consisting of an upright, open triangular frame with usually46 strings of graded lengths played by plucking with the fingers.