to calm yourself by using something soothing
何か落ち着くものを使って落ち着く (nanika ochitsuku mono o tsukatte ochitsuku)
"He simmers down with a cup of tea after tense meetings."
"彼は緊張した会議の後でお茶で落ち着きます。" (Kare wa kinchou shita kaigi no ato de ocha de ochitsukimasu.)
to plan in detail how something will happen
to isolate yourself from others to calm down
to increase a country's foreign currency holdings
to try hard not to cry
to fasten your seatbelt for safety
to have an official position of authority or power
