得到与失去。
Marriage gain and loss affects this stock positively and negatively, Waite says.婚姻的得失会或积极或消极地影响到这个储备系统。
Yo-yo dieting is another no-no. The repeated weight gain and loss stretches your skin and makes it loose.体重溜溜球效应也不是好现象,体重反复增加和减少会拉伸皮肤并使它过于松弛。