Poid
形心(曲线), 拟正弦线, 膺正弦线, 瞬心轨迹
🗣️ 情景例句
And how are you going to stop him?
那， 怎么去阻止他呢？
Out of my control.
我无能为力。
Education in the wilderness is not a matter of monetary means.
荒凉地区的教育不是钱的问题，