(of a thought or image) to come to mind; (of a smile etc) to appear (on sb's face); (of a problem etc) to emerge

to emerge

plankton

buoy

floating clouds; fleeting; transient

to float; to hover; to drift (also fig., to lead a wandering life); to rove; showy; superficial

frivolous; careless; giddy

to float (in the air etc); suspension

to float; to hover; also written 漂浮

to float up