To explore or attempt something that has never been done before.
これまで誰も行ったことのないことを探検または試みること。 (kore made daremo itta koto no nai koto o tanken mata wa kokoromiru koto)
"The mission to Mars aims to go where no man has gone before."
"火星へのミッションは、誰も行ったことのない場所に行くことを目指している。" (kasei e no misshon wa daremo itta koto no nai basho ni iku koto o mezashite iru)
to choose something after thinking about it
to punish someone severely
something that seems bad but results in something good
to do the same thing as someone else, especially online
to begin to improve after a difficult period
to make something easier to understand or to tidy a place
