(~s)
Your ~ is the internal biological mechanism which causes your body to automatically behave in particular ways at particular times of the day.
Jet lag is caused because the ~ does not readjust immediately to the time change.
N-COUNT: usu sing
(~s)
Your ~ is the internal biological mechanism which causes your body to automatically behave in particular ways at particular times of the day.
Jet lag is caused because the ~ does not readjust immediately to the time change.
N-COUNT: usu sing
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012