Generatrixes
n. [數(shù)] 母線；母面；母點(diǎn)
??? 情景例句
Now this is my idea of a good time!
這才是我所謂的享受！
Have you washed any cars?
你洗車嗎？
How long has Kate been at her school?
凱特進(jìn)校學(xué)習(xí)有多長(zhǎng)時(shí)間了？