tag onto
phrasal verbtag something on | tag something onto something
- to add something to the end of something that already exists, especially in a careless way
（尤指漫不经心地）给…加上，附加 - An apology was tagged onto the end of the letter.
信的结尾顺便附了一句抱歉的话。
- An apology was tagged onto the end of the letter.