This letter had a large green stamp on it. The address was written in small letters in blue ink.

架子上的信印又大又绿，地址用蓝色墨水书写，字写得又小又细。

The other one should have a green stamp, but it's the orientation guide we hand out to new employees.

另一个应该盖有绿章，但这是我们发给新员工的入职指南。