packet

空包

a packet with nothing inside it

里面没有任何东西的包裹

the bag that potato crisps are sold in

a small box for cigarettes, known as a 'cigarette pack' in AmE

糖包

a small sachet of sugar

一小袋糖

番茄酱包

a small sachet of ketchup

一小袋番茄酱

a box or bag that cereal is sold in

种子包

a small paper envelope containing seeds for planting

装有待播种种子的纸质小信封

芥末包

a small sachet of mustard

一小袋芥末酱

工资袋

工资袋

the box that cornflakes are sold in

数学练习包

work to do in the holiday/vacation

假期中要做的作业

袋装汤

dehydrated soup sold in a packet, to which you add hot water

在小袋或包装中出售的汤料混合物。

包装内含有某物

used to describe the contents of a packet

用于描述包装的内容物

一包...

used to specify the contents, e.g., a packet of crisps, a packet of sugar

用于指明内容物，例如：一包薯片，一包糖

在包装上

refers to information written on the surface of the packet

指写在包装表面的信息

打开包装

to unseal or tear a packet to get to the contents

打开或撕开包装以取出内容物