Circumstance: In the "deregulated" marriage market of today, men and women enjoy "free market access" and freedom of choice, and the ratio of the sexes is becoming more and more evenly balanced.
現象：在今日開放的婚姻市場中，男女兩性都可自由進場，自由選擇另一半。市場上兩性人口比例也日趨平衡。