Ufologist
n. 不明飞行物研究者
🗣️ 情景例句
The welcome sign over the door.
门上的欢迎标语。
He insisted on going along.
他坚持要一个人去。
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries
比如，很多公司向图书馆借阅科技书籍时感到很困难，