If members of a group are given a certain amount each, every member of the group is given that amount.
The children were given one each, handed to them or placed on their plates.
孩子们每人给了一个,递给了他们或者放在了他们的盘子里。
If you refer to each thing or each person in a group, you are referring to every member of the group and considering them as individuals.
Each book is beautifully illustrated.
每本书都配有精美的插图。
Each year, hundreds of animals are killed in this way.
每年数百只动物就是这样被杀死的。
each and every
You can refer to each and every member of a group to emphasize that you mean all the members of that group.
My goal was that each and every person responsible for Yankel's murder be brought to justice.
我的目的是让每一个对扬克尔的谋杀负有责任的人都受到惩处。
Each refers to every member of a group, considering them as individuals.
two bedrooms, each with three beds.
两间卧室,每间有3张床。
Each is used to emphasize that something applies to every member of a group.
We each have different needs and interests.
我们每人都有不同的需要和兴趣。
You use each other when you are saying that each member of a group does something to the others or has a particular connection with the others.
We looked at each other in silence, each equally shocked.
我们无言地对视,每个人都同样地震惊。
Both sides are willing to make allowances for each other's political sensitivities.
双方都愿意顾及相互的政治敏感性问题。
Each of a group of people or things means every member of the group.
He handed each of them a page of photos.
他递给他们每人一版照片。
Each of these exercises takes one or two minutes to do.
这些练习题每道要花一两分钟做完。
If you refer to each one of the members of a group, you are emphasizing that something applies to every one of them.
He picked up forty of these publications and read each one of them.
他从这些出版物中挑了40本,每本都读了。