to admit that you have done something wrong
自分の間違いを認める (jibun no machigai o mitomeru)
"It takes courage to own up to your mistakes."
"自分の間違いを認めるには勇気が必要です。" (jibun no machigai o mitomeru ni wa yuki ga hitsuyo desu)
to spend a lot of time working
to actively try to achieve your ambitions
to take strong action to stop something
to contact or communicate with someone
to increase the price of something
at risk; in danger of being lost