Vocabulary consisting only from characters you are able to read
投入
とうにゅう
(1)throwing (e.g. something into somewhere), (2)investment, putting in (personnel, etc.), (3)release of a product, (4)making (an electrical circuit) suru
老人
ろうじん
the aged/old person/(P)jlpt3
印画紙
いんがし
(photographic) printing papersuru