n
1 [U] action of attaching; being attached 附着; 附属; 附带
*She's on attachment to (ie temporarily working in) the Ministry of Defence. 她暂时隶属于国防部.
2 [C] thing that is or can be attached 附属物; 附件
*an electric drill with a range of different attachments 带有各种配件的电钻.
3 [U] ~ (to/for sb/sth) affection; devotion 依恋; 眷恋; 留恋
*feel a strong attachment to one's family 十分恋家.
4 [U] (law 律) seizing sb's property, etc with legal authority 扣押或查封某人的财物.

n
[U and C]
a feeling that you like or love someone or something and that you would be unhappy without them
attachment to/for
　a child's attachment to its mother
[C]
a part that you can put onto a machine to make it do a particular job
　The vacuum cleaner has various attachments.
[U]
belief in and loyalty towards a particular idea, organization etc
attachment to/for
　old people's attachment to traditional customs
[C]
a document or file that is sent with an email message
　I'll send the spreadsheet as an attachment.
[U and C]
when you fasten or connect one thing to another, or the thing that you use to do this
　Hooks were fixed to the wall for the attachment of the ropes.
　the attachments that secure your boots firmly to the skis
on attachment
working for a particular organization, especially for a short period of time
　He was sent on attachment to their offices in Hong Kong.
[U and C]law
a situation in which part of the money someone earns or money that is owed to them is taken by a court of law and used to pay their debts
[C]technical
a piece of paper fastened to a document such as an insurance agreement, which shows a special condition of the agreement