A place that is packed is very crowded.
The place is packed at lunchtime.
这个地方在午餐时间非常拥挤。
a packed meeting in Detroit.
一个在底特律召开的座无虚席的会议。
Something that is packed with things contains a very large number of them.
The encyclopedia is packed with clear illustrations and over 250 recipes.
这本百科全书有大量清晰的插图,还有二百五十多个食谱。