to join an ongoing conversation
進行中の会話に参加する (shinkō-chū no kaiwa ni sanka suru)
"He politely broke into the conversation to share his opinion."
"彼は礼儀正しく会話に割り込んで自分の意見を共有しました。" (Kare wa reigi tadashiku kaiwa ni warikonde jibun no iken o kyōyū shimashita.)
to move or change focus, method, or responsibility
to suddenly start laughing loudly
to improve or increase after a slowdown
to feel deep sadness or longing because of something or some...
to discover the real cause of something
to become more confident, attractive, or happy over time