The traffic jams during morning and afternoon rush hours are a headache in big cities now.
上下班高峰期的交通拥堵问题是大城市目前的一个棘手/令人头疼的问题。
The traffic jams during morning and afternoon rush hours are a headache in big cities now.
上下班高峰期的交通拥堵问题是大城市目前的一个棘手/令人头疼的问题。
