Poid
形心(曲线), 拟正弦线, 膺正弦线, 瞬心轨迹
🗣️ 情景例句
This is beautiful! Chinese calligraphy. What do these characters mean?
好漂亮！是中国书法！这上面写的是什么意思？
Her social life got in the way of her studies.
她的社交活动妨碍了自己学业。
It's a small world.
世界真小。