纪录片《全球怪象》 第28期：紫外辐射

The Sun had a secret rhythm¹.

太阳有一个秘密的周期

As well as an 11-year time frame²,

在11年周期循环的同时

it also operated on a much longer timescale -

它还有一个更长的周期

the grand solar cycle,

大太阳周期

averaging every 300 years or so.

平均大概三百年为一个周期

And Mike Lockwood's ground-breaking research

迈克·洛克伍德开创性的研究

helped explain what was happening in the 17th century.

帮助解释了17世纪发生的事

Because that was a time of a grand solar minimum³,

因为那时是大太阳周期的极小期

where UV light would be at its lowest.

紫外辐射降到最低

Not just for years,

不仅仅持续几年

but decades.

而且是几十年

And that would create the conditions to allow the wind

创造了条件

to blow from the east -

让东风吹到英国

leading to frost fairs

导致了霜冻嘉年华

and the production of beautiful violins.

以及完美的小提琴被制作出来

Could that help explain the recent cold winters?

这可以帮助解释最近的寒冬吗

Have we reached another grand solar minimum?

我们到了另一个大太阳周期的极小期吗

The answer was a convincing

答案是确定的

No.

不

1 rhythm   

n.韵律；节奏

参考例句：

• He has an ear for the rhythm of Irish speech.他对爱尔兰语的节奏很敏感。
• His poem has a pleasing rhythm.他的诗有和谐的韵律。

2 frame   

n.框架，结构，体格；vt.构成，设计，制定，使适合，陷害； 框架，（是指在数据链路层中，将网络层数据包加上开始与结尾信息包组成一个框架）

参考例句：

• The house has a wooden frame which is faced with brick.这个房子是木质结构的砖瓦房。
• We must frame up that picture.我们必须给那幅画装上框。

3 minimum   

adj.最低的，最小的；n.最小量，最低限度

参考例句：

• What is the minimum price?最低价是多少？
• Today's minimum temperature is 10℃.今天的最低气温是10℃。