The use of machinery has superseded manual labour.機(jī)器的使用已經(jīng)取代了手工勞動(dòng).Flintlock: Ignition system for firearms early 16 th century, It'superseded the matchlock and the wheel lock.燧發(fā)機(jī): 火器點(diǎn)火系統(tǒng),始于16世紀(jì)初, 取代火繩機(jī)和轉(zhuǎn)輪打火機(jī)轉(zhuǎn)輪打火機(jī).Hand...