Its three blades have a totalspan of 82 metres and, together with the tower that supports them, weigh 234 tonnes.
风轮机的三片桨叶总长达82米，下有塔身支撑，一共重达234吨。
2
The server requires these resources on an on-demand basis for a much shorter period than the time span between t1 and t2, which is the total duration of the transaction from the client's perspective.