one side; either side; on the one hand; on the other hand; doing while[cedict]
在
zàiㄗㄞˋ
(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
按
ànㄢˋ
to press (with the hand); to push; to control; to restrain; to check; pressing down (brush movement in painting); according to; in the light of[cedict]