学习资料
[意 思]n. 马具
[例]  You can not judge of the horse by the harness.凭马具难断马优劣。
vt. 给...上挽具,套(马)
[例]  The farmer harnessed the horse to the cart.
农夫把马套到马车上。
vt. 治理,利用,控制,驾驭
[例]  It will take a couple of years to harness that river. 治理那条河流要花两三年时间。