Hofmann
霍夫曼(①姓氏 ②August Wilhelm von, 1818-1892, 德国有机化学家)
🗣️ 情景例句
No harm done.
没什么。
It's no use pumping a dry well.
徒劳无益。
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，