Dihedral group
[计] 二面体群
🧩 词语组成解析
a. (数)二面的\\nn. 两面角
group
[ɡrup]
n. 组，团体;群，批;（雕塑等的）群像;（英美的）空军大队;
vt.& vi. 使成群，集合;
vt. 分类，归类;
🗣️ 情景例句
I hope he's good when we're away.
我希望我们不在的时候他很乖。
I will take a ship.
我将去搭船。
Anthropologists wondered where the remote ancestors of the Polynesian peoples now living in the Pacific Islands came from.The sagas of these people explain that some of them came from Indonesia about 2,000 years ago.
其中一部分是约在2，000年前从印度尼西亚迁来的。