to make changes to something to make it more interesting or effective
何かをより面白く、または効果的にするために変更を加えること (nanika wo yori omoshiroku, mata wa kouka teki ni suru tame ni henkou wo kuwaeru koto)
"The restaurant decided to ring the changes with a new menu."
"レストランは新しいメニューで変更を加えることを決定しました。" (Resutoran wa atarashii menyuu de henkou wo kuwaeru koto wo kettei shimashita.)
both people involved in a situation are equally responsible
in the same situation or facing the same challenges
to date someone regularly and exclusively
crazy or extremely worried
to help someone with a task
to trust or believe in someone’s ability