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。