Gadgeteering
n. 精巧机件的发明(设计)
🗣️ 情景例句
Some rock 'n' roll.
一些摇滚乐。
I've got my hands full.
我手头正忙。
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。