Because we're talking about the group as a whole.

因为我们谈论的是整个团体。

The attention is on the group as a whole so everyone who came to the dinner party brought a dish.

关注的是整个完整的群体，所以每个来晚宴派对的人都带了一道菜。

'Each' puts more emphasis on the individual within the group and 'every' puts our attention on the group as a whole.

‘Each’更加强调团体中的每个个体，‘every’更关注的是整个整体。

Well . . . the recognition for a job well done went to the group as a whole, no names were named.

. . 对出色工作的认可是对整个团队的认可， 没有点名。 出色地 。

But considering the population's small size and low genetic variation, this one mammoth could be fairly representative of the group as a whole.

但考虑到种群规模小和遗传变异低，这只猛犸象可以相当代表整个种群。

The group as a whole is going to survive and this is one big advantage of the gregarious nature of a lot of animals including these dinosaurs.

群居动物的一个巨大优势在于整个群体能够生存下来，包括恐龙在内的很多动物都有群居习性。

So a group of people came to the dinner party and all of these people brought a dish but by using 'every', I'm putting emphasis on the group as a whole, right?

所以呢一群人来到了晚宴派对，这些人都带了一道菜，但是使用‘every’的话，我更强调的是整个团体，是吧？