Sinusoid
n. 正弦曲线, 窦状隙\\n[医] 窦状隙; 窦状的
🗣️ 情景例句
Good morning, Mr. Zhou. Take a seat, please. What can I do for you?
早上好，周先生。请坐。有什么事吗？
Overdone is worse than undone.
过犹不及。
Knowledge is power.
知识就是力量。