"附加"用英语可以说作"addition"或"attachment". "Addition"来源于拉丁语"additio"，意为"增加"或"附加". "Attachment"来源于拉丁语"ad"和"tacēre"，意为"附着"或"粘附".

例句：

The addition of salt makes the soup taste better.

附加盐使汤更好喝。

Please send the attachment with your email.

请在您的电子邮件中附上附件。