Peritrochoid
外摆线圆
🗣️ 情景例句
Can you finish the work by five o'clock tomorrow?
你能在明天五点钟之前做完这项工作吗？
He that fears every bush must never go a-birding.
疑神疑鬼，绝无收获。
What colour's your new dress?
你的新边衣裙是什么颜色的？