Vocabulary consisting only from characters you are able to read
投入
tounjuu
(1)throwing (e.g. something into somewhere), (2)investment, putting in (personnel, etc.), (3)release of a product, (4)making (an electrical circuit) suru
火に油を注ぐ
hiniaburawososogu
to make things worse, to stir things up, lit: to add fuel to the firegodan, verb
向上
koudžou
elevation/rise/improvement/advancement/progress/(P)leda1, suru