木有hint

car-pool metropolitan overcrowding collision car accident density of population overpass underpass internal combustion engine diesel engine steam-driven petrol-driven hydrogen-driven chaotic horse-drawn carriage chariot
拼車 n.&vi. car-pool 大都市的 adj. metropolitan 過度擁擠 n. overcrowding 撞車 n. collision/ car accident 人口密度 density of population 高架橋，過街天橋 n. overpass 地下過街通道 n. underpass 內(nèi)燃機 internal combustion engine 柴油機 n. diesel engine chaotic 蒸汽驅(qū)動的 adj. steam-driven 汽油驅(qū)動的 adj. petrol-driven 以氫氣為動力的 adj. hydrogen-driven 混亂的 adj. chaotic 馬拉的觀光車 horse-drawn carriage 歐洲古代的戰(zhàn)車 n. chariot