Vocabulary consisting only from characters you are able to read
下ろす
おろす
(1)to take down (e.g. flag), to launch (e.g. boat), to drop, to lower (e.g. ladder), to let (a person) off, to unload, to discharge, (2)to drop off (a passenger from a vehicle), to let (a person) of godan, verb, vtrans
水力
すいりょく
hydraulic power, water powermix
下る
くだる
(1)to descend, to go down, to come down, (2)to be handed down (of an order, judgment, etc.), (3)to pass (of time), (4)to surrender, to capitulate, (5)(often in neg. form) to be less than, to be i godan, jlpt3, verb, vintrans
入口
いりぐち
entrance, gate, approach, mouthjlpt5
二人
ふたり
two persons, two people, pair, couplejlpt5
通す
とおす
to let pass, to overlook, to continue, to keep, to make way for, to persist ingodan, jlpt3, verb, vtrans