而有害于幸福感的活动则是乘车上下班。一项研究表明即便是参加一个每月会面一次的组织所产生的幸福感与收入翻番时所得的幸福感是一样多的。
According to one study, joining a group that meets even just once a month produces the same happiness gain as doubling your income.
对于你的家人来说，发誓每周一次甚至每月一次参加志愿者活动，可能不太现实。
Vowing to volunteer once a week or even once a month may not be realistic for your family.
运动教育介入内容包括教学活动及每月一次共三次的访视活动。
The content of exercise education intervention included teaching activities and three times of visits each month.
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