Professionalise
v. 使专业化；使职业化
🗣️ 情景例句
Bye, see you later.
后会有期。
Who wrote that composition?
那个作品是谁写的？
So was born the echo-sounding apparatus, now in general use in ships.
这样就产生了目前各种船舶上普遍应用的回声探测仪。