Screwthreads
(screwthread 的复数) n. 螺纹
🗣️ 情景例句
Hello. Is Mrs. Montefiore there?
喂， Montefiore太太在吗？
Goodbye. Hope to see you again next year.
再见。希望明年再见到你。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。