Spectroscopists
(spectroscopist 的复数) n. 光谱学家
🗣️ 情景例句
and his book
他的书
He that knows not how to hold his tongue knows not how to talk.
不知缄口的不善言。
It's about the universe. The speaker's supposed to be excellent.
是关于宇宙的。演讲人应该是一流的吧。