Born on March 9, 1934, Gagarin was a military pilot before being chosen for the first group of cosmonauts in 1960.
加加林生于1934年3月9日，在1960年被选为第一组宇航员之前是服役中的飞行员。
2
Depending on the specific project constraints, it can make sense to select a group of users for the pilot that embodies either of these characteristics.
根据项目的具体情况，为实验性迁移选择的用户组最好具备以下特征之一。
3
Tell them your plans, and introduce them to the process by holding a single pilot study circle with this group.