Vocabulary consisting only from characters you are able to read
兆
ちょう
(1)sign, omen, indication, portent, (num) (2)10^12, 1,000,000,000,000, trillion (American), (obs) billion (British) mix
取り組む
とりくむ
to tackle/to wrestle with/to engage in a bout/to come to grips with/to make effort/to strive for/to deal with/(P)godan, leda1, verb, vintrans