22.bold exploration
23.need to be developed to meet/satisfy increased demand.
24.at a primary stage of development
25.transient
26.I'm a native of Jiangsu province
27.lifetime occasion 人生大事(结婚等)
28.The number of A has been on the rise for the past decade.
29.choose a happy and easy way to do sth instead of being bound by tradition
30.Sun Zhongshan paved the way toward a Chinese utopia, but could only show it on paper.