Poid
形心(曲线), 拟正弦线, 膺正弦线, 瞬心轨迹
🗣️ 情景例句
May I speak to Miss Hu, please?
可以请胡小姐听电话吗？
I'll probably have eggs and toast for breakfast.
我可能早餐吃鸡蛋和烤面包。
she rang up her daughter and asked for her help in what she described as a little spot of bother.
她只得打电话向女儿求援，说她碰到了一点儿小麻烦。