Poid
形心(曲线), 拟正弦线, 膺正弦线, 瞬心轨迹
🗣️ 情景例句
Nothing much. I'm just taking one day at a time.
没什么。我只是过一天是一天。
Better is the neighbour's hen than mine.
人莫知其苗之硕。
What did you say to him?
你对他怎么说的？