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modes means of transportation vehicle decline densely-populated soar packed crowded be squished up population explosion population boom impose higher taxes on pedestrian fine sardine-packed hazardous subway car limo fleet
交通方式 modes/ means of transportation 交通工具 n. vehicle 下降 n.&vi. decline 人口稠密的 adj. densely-populated 激增 vi. soar 擁擠的 adj. packed/ crowded 被擠在……里 be squished up 人口爆炸，人口激增 population explosion/ population boom 提高征稅 impose higher taxes on 行人 n. pedestrian 罰款 vt.&n. fine 行人公交像沙丁魚罐頭那么擁擠 adj. sardine-packed 危險(xiǎn)的 adj. hazardous 地鐵的一節(jié)車廂 subway car 加長轎車 n. limo 車隊(duì) n. fleet