彼はついに長年の目標を成し遂げた。
He finally achieved the goal he had pursued for years.
チーム全員の協力があったからこそ、この大事業を成し遂げることができた。
It was only thanks to the whole team's cooperation that we were able to accomplish this great undertaking.
一度始めたことは最後まで成し遂げたい。
Once I start something, I want to see it through to the end.