buoyant

a.有浮力的

bumpy, bun, bun-fight, bunch, bundle, bung, bung-hole, bungalow, bungle, bungler, bungling, bunion, bunk, bunker, bunkum, bunny, Bunsen burner, bunting, buoy, buoyancy, buoyantly, bur (also burr), burble, burden, burdensome, bureau, bureaucracy, bureaucrat, bureaucratic, bureaucratically, burette, burgeon, burger, burgh, burgher, burglar, burglar-alarm, burglar-proof, burglary, burgle,