Sherry's note round four‏

31.under construction建造中的
The building has been under construction since last year.
32.a skycraper摩天大樓
I look forward to working in a company which is in a skycraper
33.air conditioning system中央空調系統
In public places, there are usuallyair conditioning system.
34.rush hours尖峰時刻
Many car accident happened during rush hours.
35.traffic lights紅綠燈
Passersby should follow the traffic lights when they cross the road.
36.parking lot停車場
As a growing number of people live in the city, it has been more and more difficult to find a parking lot.
37.rent a house租房子
Many college students like to rent a house near their school.
38.speed limit速線
In Germany, there is no speed limit when driving on the freeway.
39.traffic jam交通阻塞
In tourist spots,they often have the traffic jam.
40.bunjee jumping高空彈跳
I would like to try bunjee jumping some day.