to express regret or apology for something
何かについて後悔や謝罪を表現する (nanika ni tsuite kōkai ya shazai o hyōgen suru)
"He said sorry for his rude behavior."
"彼は彼の失礼な行動について謝罪しました。" (kare wa kare no shitsurei na kōdō ni tsuite shazai shimashita)
to make great efforts to achieve or obtain something
to reduce harmful gases released into the air
to feel angry or regretful for doing or not doing something
to increase efficiency and output of workers or industries
to not give up believing that things will get better
to use your influence or connections to achieve something
