That is promising, Dr Lewis says, considering that the average wind turbine manages only 40%.

考虑到风力涡轮机平均只有40%，刘易斯博士说，那是有可能的。

It weakened slightly before landing around 7: 20 p.m. local time, with average winds of 130 kilometers per hour.

台风在当地时间晚上7点20分登陆前略有减弱，平均风速为每小时130公里。

This is in addition to the fact that the average wind speed reaches as much as 20 miles per second.

此外，平均风速达到每秒二十英里。

Low average wind speeds and Singapore's location  along one of the world's busiest and narrowest shipping lanes rules out offshore wind farms -  and geothermal energy sources are non-existent.

低平均风速和新加坡位于世界上最繁忙和最狭窄的航道之一的位置排除了海上风电场 - 并且不存在地热能源。