又中又英——Something＂creates a buzz＂.

　　How many steps a day should people take to keep healthy? Different studies have shown different results. Some say people should take 6,000 steps daily while others say it should be 10,000. The health app in my smart phone suggests 6,000. I used to do that easily in Hong Kong by walking to most places and using the stairs instead of escalators. Now that I am in the US, it's harder because most people live in residential areas far away from supermarkets, shopping malls, or restaurants. They have to drive to these places. Two new studies released recently have created a buzz among researchers and health freaks.
　　If something "creates a buzz" it means it causes excitement or great interest. The word "freak" has many meanings. One meaning is someone who is very interested in a particular subject or activity. Health freaks are people who care very much about their health. History freaks are very interested in history. The two recent studies found the healthiest number of steps a day is 7,000. That's why they created a buzz among researchers and health freaks. The experts who did one of the studies said 7,000 steps was the sweet spot. The expression "sweet spot" has several meanings but used this way it means a particular situation, point, or combination of things that is most effective or beneficial.
　　Researchers found the point or range of steps a day most beneficial for staying healthy is 7,000. If people do 7,000 steps a day they will increase their chances of living longer. The researchers said sports such as cycling, swimming, or jogging for about 2.5 hours a week will achieve the same result. But they said doing more than 7,000 steps a day or exercising far more than 2.5 hours a week will not increase the chances of living longer. They warned over-exercising can be dangerous. Researchers said the sweet spot, or the most beneficial, for good health is 7,000 steps a day.
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　　人一天应该走几多步，才能保持健康？不同的研究显示不同的结论，一些会说人一天应走六千步，另一些则说应走一万步。我智能电话的健康应用程式则建议要走六千步。我在香港的时候，常步行到不同的地方，以及不搭电梯而改行楼梯，通常很易就能达到。现在我身处美国，要做到就比较难，因为大部份人都住在住宅区，跟超市、购物商场或餐厅相距甚远，他们都得驾车去那些地方。最近有两个新的研究发表，在研究界以及关注健康人士（health freaks）中间造成轰动（created a buzz）。
　　若某事 "creates a buzz"，意即它引起广泛兴趣，造成了话题。Freak一字有许多意思，其中一个意思是特定范畴或活动的狂热爱好者。Health freaks就是极其关注自身健康的人士； history freaks则是醉心钻研历史的历史迷。最新的两个研究发现，最健康的步数是一天七千步。因此它在研究人员与关注健康人士（health freaks）中间引起哄动（created a buzz）。其中一个研究的专家们指，七千步是sweet spot——习语 "sweet spot" 有几个意思，但在这里是指最恰当、最有效用的特定状态、位置或各种因素的组合。
　　研究人员发现，最有益健康的一天步数是七千步。若人们每天步行七千步，可以增加他们更长寿的机率。研究员指，每周进行两个半小时的踏单车、游泳或跑步等活动，也可达到同样的结果。然而他们又说，每天步行多于七千步，又或每周做运动多于两个半小时，并不能再增加长寿的机率。他们更警告，过度运动可以很危险。研究员说，那个sweet spot，或说对健康「最有益的点」，就是一天走七千步。[email protected]
　　中译：七刻
Michael Chugani 褚简宁