倒换

to take turns / to rotate (responsibility)

to fall; to collapse; to lie horizontally / to fail; to go bankrupt / to overthrow / to change (trains or buses) / to move around / to resell at a profit

to invert; to place upside down or frontside back / to pour out / to tip out; to dump / inverted; upside down; reversed / to go backward / contrary to what one might expect; but; yet

to exchange / to change (clothes etc) / to substitute / to switch / to convert (currency)