Poid
形心(曲线), 拟正弦线, 膺正弦线, 瞬心轨迹
🗣️ 情景例句
but I think I can be of some help to you.
但我觉得我可以对你略有帮助。
This alone made our nine-day trip worthwhile.
光这件事我们9天的旅行就非常值得。
They were all hungry and the food smelled good.
他们全都饿了，饭菜散发出阵阵香味。