Vocabulary consisting only from characters you are able to read
水力
suirjoku
hydraulic power, water powermix
二人
futari
two persons, two people, pair, couplejlpt5
人
hito
man, person, human being, mankindhito, jlpt5
下る
kudaru
(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
土木
doboku
public worksmix
二十日
hacuka
twenty days, twentieth day of the monthjlpt5, toki