to focus and work hard for a long time
長い間集中して一生懸命働くこと (nagai aida shuchu shite isshokenmei hataraku koto)
"He kept his nose to the grindstone and got promoted."
"彼は一生懸命働き続けて昇進した。" (kare wa isshokenmei hatarakitsuzukete shoshin shita)
broadcasting live; being aired on television or radio
to set a firm boundary or make a limit clear
someone who is very similar to their parent
unable to think clearly; mentally exhausted
to perform well in a difficult situation
to feel relaxed and confident
