To try every possible way to achieve something.
何かを達成するためにあらゆる方法を試す。 (Nanika o tassei suru tame ni arayuru hōhō o tamesu.)
"The detective left no stone unturned to find the truth."
"探偵は真実を見つけるためにあらゆる手段を尽くした。" (Tantei wa shinjitsu o mitsukeru tame ni **left no stone unturned**.)
to be so worried or confused that you do not know what to do
To focus on hard work and continuous effort.
to keep something and not give it away
to not lose confidence or courage
Extremely important or widely discussed news
to deceive or trick someone
