他们的区别在于:
enclosure指的是附件;圈占;围绕;圈占地。
attachment指的是(用电子邮件发送的)附件,附属物;依恋,依附;扣押财产<法>逮捕,扣押(人,财产)。
例句:
enclosure
1、This enclosure was so vast that the outermost wall could hardly be seen.
这块围场如此之大,几乎看不见最远端的围墙。
2、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。
3、The men walked aimlessly about the enclosure.
人们无目的地在围场里走着。
attachment
1、As a teenager she formed a strong attachment to one of her teachers.
少女时代的她曾迷上了自己的一个老师。
2、Some models come with attachments for dusting.
一些模型上附带了除尘器。
3、During her course she worked on attachment for six months at Kew Gardens.
在上学期间,她曾临时到基尤植物园工作了6个月。