2. The Soviets
completed these preparations in complete secrecy, concealing the movement and disposition of their forces.

苏军在完全的保密中完成了这些准备,隐蔽了军队的行动和部署。
3. After a month of careful preparation, modification, and finally
completed the bulk of the work, wish to upgrade success!

经过一个月来的精心准备、修改,终于基本完成了大部分的工作,预祝升级成功!