Playing the piano is one of his favourite relaxations.弹钢琴是他喜爱的一种消遣.Playing the paino is one of his favourite relaxations.弹钢琴是他最喜爱的消遣之一.We develop several formulations of the maximum failure cost problem and present relax...

n.消遣( relaxation的名词复数 )，松懈，松弛，放松...

relaxations的音标：...