可可电台，每期节目一话题，让英语磨练耳朵的同时学到更多有益的小知识，丰富知识的同时受益于生活。

健康好习惯

Exercise at least 3-4 times a week

每周运动3-4次

All the healthy habits in the world won't help your overall fitness if you sit on the couch all day. To be a healthy man, get up and get active. But how much exercise is enough? Most major health organizations suggest at least 30 minutes of regular, moderate-intensity physical activity on most days to prevent cardiovascular diseases and to maintain fitness. This, of course, comes with the footnote that more exercise is always better.

如果你成天窝在沙发里头，神都救不了你。人要活，就要动。可是多少运动才够呢？每天30分钟中等强度的运动是最能防止疾病和保持身材的。

【知识点讲解】

footnote n.脚注； 补充说明；

例句：

I'm afraid that his name will now become a footnote in history.

恐怕他的名字现在会成为历史的注脚。

A footnote is made at the bottom of the page.

注脚列在书页下端.

The asterisk refers the reader to a footnote.

星号是让读者参看脚注.

at least adv.至少；

例句：

Try to eat at least four slices of bread a day.

每天尽量至少吃4片面包。

Whatever its obscurities, the poem was clear on at least one count.

这首诗再怎么晦涩，至少有一点是清楚的。

The police say his death was an accident, officially at least.

警方说他的死是个意外，起码官方消息如此。

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