(1)set afloat; "He floated the logs down the river"; "The boy floated his toy boat on the pond"
(2)浮かばせる
(1)He floated the logs down the river
(2)彼は川を丸太で下った
(3)The boy floated his toy boat on the pond
(4)男の子は、彼のおもちゃのボートを池に浮かべた