enclosure有外壳的意思。

enclosure

n.圈占地;圈用地;围场;圈地;(信中)附件

复数： enclosures

例句：

Enclosure is the sample of our newly developed product.

随信附上我们新开发产品的样品。

相关介绍

The men walked aimlessly about the enclosure.

人们无目的地在围场里走着。

The enclosure of public land meant that ordinary people could no longer use it.

公用地的圈占意味着普通人不能再使用了。

We were led to a fenced enclosure.

我们被带到一处用篱笆围住的场地。