(the) first among equals

the person or thing having the highest status in a group

鶴立雞群者

other (或 all) things being equal

provided that other factors or circumstances remain the same

其他因素（或條件）不變，同等條件下

it follows that, other things being equal, the price level will rise.

所以，在同等條件下，價(jià)格水平會(huì)上升。