relaxations的中文翻譯是什麼意思

Playing the piano is one of his favourite relaxations.

彈鋼琴是他喜愛的一種消遣.

Playing the paino is one of his favourite relaxations.

彈鋼琴是他最喜愛的消遣之一.

We develop several formulations of the maximum failure cost problem and present relaxations for them.

我們建立了幾種最大失靈成本的模型並討論他們的鬆弛問題.