Stenographing
n. 速记文字, 速记机\\nvt. 速记
🗣️ 情景例句
Good night, Grandpa.
晚安， 爷爷。
Where do you live?
你在哪儿住？
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。