In addition to the internal variability of the global climate system itself, there is the added factor of external influences, such as volcanoes and solar activity.

除了全球气候系统本身的内部变化之外，还有外部影响的附加因素，如火山和太阳活动。

youdao

Of course, the most important factor in determining what's the best cross training activity for you is whether or not you like it.

当然，在确定什么是最适合你的交叉培训活动中最重要的因素是你是否喜欢它。

youdao

So the trick is to compare the activity of your typical user with the activity described in the tests in part 1 and 2 of this series, and work out a rough scaling factor.

因此，技巧就在于将典型用户活动与本系列第一、第二部分描述的活动进行对比，并找到一个大致的比例系数。

youdao

An emerging consensus now indicates a rising tide of entrepreneurial activity is a factor that links low tax burdens and improvements in welfare and wealth-creation for those at the bottom.

FORBES: Don't Let The Pundits Fool You, A Tax Hike On The Rich Is Paid For By The Poor

Another factor that needs considering is the level of lightning activity in early February in the region around Rome - something the UK's Met Office is able to monitor and record with the help of a system of sensors dotted around Europe.

BBC: What is the chance of lightning striking St Peter's?

Lapatinib, it turns out, also inhibits the activity of a protein called the epidermal growth factor receptor, which has been found to be important for stem-cell proliferation.

ECONOMIST: Cancer therapy