1 extensive

2 wide range

1 to be in flood

2 to overflow (the banks)

3 to inundate

4 to spread unchecked

1 variant: 泛 fàn

1 to make a general reference

2 to be used in a general sense

1 nodding acquaintance

2 slight familiarity

1 sailing on the sea of learning (idiom)

1 lit. to flood (idiom)

2 fig. rampant

3 in plague proportions

1 lit. to live on a boat

2 to drift from place to place (idiom)