Cassegrain
n. 卡塞格伦望远镜(亦作Cassegrain telescope)
🗣️ 情景例句
Unless in uniform, he doesn't look like a policeman.
除非穿上制服，要不他看起来不像警察。
Without all the facts, Helen could only conjecture a solution.
由于事实还没有全部完备，海伦只能臆测解决的方法。
The guy next to me Wrote his name at the top of the paper.
坐在我旁边的那个人只在试卷顶端写自己的名字。