Vocabulary consisting only from characters you are able to read
水力
すいりょく
hydraulic power, water powermix
よじ上る
よじのぼる
to climb, to clamber (over, up), to scramble (up), to scale, to claw one's way upgodan, verb, vintrans
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
上る
のぼる
(1)to rise, to go up, to come up, to ascend, to be raised, (2)to enter (esp. from outdoors), to come in, to go in, (3)to enter (a school), to advance to the next grade, (4)to get out (of water), t godan, jlpt3, verb, vintrans
二人
ふたり
two persons, two people, pair, couplejlpt5
~中
~ちゅう
in (the middle of), within, during, whilejlpt5
入口
いりぐち
entrance, gate, approach, mouthjlpt5