to use all your strength and determination to achieve something
何かを達成するために全力と決意を使う (nanika o tassei suru tame ni zenryoku to ketsui o tsukau)
"You’ll have to dig deep to finish this marathon."
"このマラソンを完走するためには、ディグ ディープしなければならない。" (Kono marason o kansō suru tame ni wa, dig deep shinakereba naranai.)
raining very heavily
a sharp increase in growth after a period of slow progress
art created for its beauty rather than for any purpose
to improve by learning from past failures
feeling nervous or anxious
to memorize something perfectly