a small paper or cardboard container in which goods are packed for selling（商品的）小包装纸袋，小硬纸板盒
a packet of biscuits/cigarettes/crisps一包饼干／香烟／油炸土豆片
a small object wrapped in paper or put into a thick envelope so that it can be sent by mail, carried easily or given as a present（邮政）小件包裹
A packet of photographs arrived with the mail.一包照片邮寄来了。
sachet
a packet of instant cocoa mix一袋混合速溶可可粉
a large amount of money一笔巨款
That car must have cost a packet.那辆汽车一定花了一大笔钱。
a piece of information that forms part of a message sent through a computer network信息包；数据包； 资讯包
