(technical)triangular (技)三角形的 a tree with large deltoid leaves. 大三角叶的树。 ■denoting a thick triangular muscle covering the shoulder joint and used for raising the arm away from the body 三角肌的
noun
a deltoid muscle 三角肌 ■each of the three parts of a deltoid muscle, attached at the front, side, and rear of the shoulder 三角肌各角肌肉 the anterior deltoid. 前三角肌。
语源
mid 18th cent.: from French deltoïde, or via modern Latin from Greek deltoeidēs