准时: on time, punctual, on schedule...
急剧: rapid, sudden...
电池: battery...
开动: to start, to set in motion, to move, to march, to dig in (eating), to tuck in (eating)...
珠宝: pearls, jewels, precious stones...
动工: to start (a building project)...
大致: more or less, roughly, approximately...
