What has changed, instead, is the relative share adopting different ways of living in early adulthood, with the decline of romantic coupling pushing living at home to the top of a much less uniform list of living arrangements.
2019年6月四級真題（第二套）閱讀 Section B
柯林斯高階英漢雙解學(xué)習(xí)詞典釋義
N-COUNT
耦接頭;聯(lián)軸器;(連接車輛的)車鉤
A coupling is a device which is used to join two vehicles or pieces of equipment together.