1.On average, an additional kilometre run by friends can inspire someone to run an additional three-tenths of a kilometre, and an additional ten minutes run by friends can inspire someone to run three minutes longer.
on average平均起来
On average each report requires 1,000 hours to prepare.
准备一份报告平均需要1,000小时 。
2.In general, if you run more, it is likely that you can cause your friends to run more.
In general通常;大体上;一般而言
In general, incumbents have a 94 per cent chance of being reelected.
通常现任官员有94%的几率会再次当选 。