翻译成英文“我是Alice的同事，很高兴认识你”

I am a workmate/colleague of Alice, glad to meet you.

一般指“同事”，用 workmate 比较好一点。

补充：按照以上的写就可以了。
或者写 Glad/Nice knowing you.
Glad to write to you.
等等都是可以的，只要在信中把您的意思表达出来就可以了，这也是语言的第一功能----交流。

I'm Alice's colleague and nice to meet you.

I am a colleague of Alice, nice to meet you!

I'm glad that I can get to know you~

Glad to meet you , I am Alice's workmate(colleague).

I'm a workmate of Alice.Glad to meet you

I'm a workmate of Alice.
Nice having to know you.