风力发电厂通过利用风能来发电。

Wind farms generate electricity by ___harnessing the power of the wind.

科学家正在研究如何利用太阳能为整个城市供电。

Scientists are researching methods of ___harnessing solar energy to power entire cities.

农夫正在给马套上挽具准备犁地。

The farmer is ___harnessing the horse to prepare for plowing.