木有hint
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
拥挤的 adj. packed/ crowded
被挤在……里 be squished up
人口爆炸，人口激增 population explosion/ population boom
提高征税 impose higher taxes on
行人 n. pedestrian
罚款 vt.&n. fine
行人公交像沙丁鱼罐头那么拥挤 adj. sardine-packed
危险的 adj. hazardous
地铁的一节车厢 subway car
加长轿车 n. limo
车队 n. fleet