Sinesoid
正弦曲线
🗣️ 情景例句
Nope. I am in perfect health.
没有。我身体好的很。
Every tree is known by its own fruit.
观其言行，知其为人。
He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究，在美国跑了许多地方，了解有关祖先的情况。