Cycloid
n. 摆线, 轮转线\\na. 圆形的, 循环性格的
🗣️ 情景例句
Grandpa really loves his family, doesn't he?
爷爷确实很爱这个家， 是吗？
Leaves are falling.
叶子落了。
Did you have a good journey?
你旅途愉快吗？