Triadaxis
三次对称轴
🗣️ 情景例句
The school was attended almost entirely by local children.
上这所学校念书的几乎全是当地的孩子。
Grasp the nettle and it won't sting you.
困难像弹簧，你硬它就软。
He had his supper, listened to the radio, read a newspaper and then went to bed.
他吃晚餐，听收音机，读报纸，然后睡觉。