The whole digit-controlled lathe of lower prices generally choose steppingdrive unit price is higher, and the machine tool selection servo drive unit.
整台数控机床价格较低的一般选择步进驱动单元，而价格较高的机床选择伺服驱动单元。
2
A human-shaped robot won't be stepping into your car to drive it.
一个人形机器人不会走进你的车里来驾驶这辆车。
3
Improve yourself at the slightest opportunity you have. Your capacity to build new relationships will depend on your personal drive to take each opportunity as stepping stones.