Onboarding refers to the "action or process of integrating a new employee into an organization or familiarizing a new customer or client with one's products or services". 

Onboarding（适职/熟悉产品）是指"让新员工融入公司组织的行为"或"让新顾客和新客户熟悉产品服务的过程"。

The word is derived from the sense of "on-board" referring to being physically on a ship, plane, or spacecraft. The word is also used as a modifier, as in the "onboarding process".

这个词来源于“on-board”一词的涵义，意指实际登船、登机、上太空飞船。该词也用作修饰语，如用于“onboarding process（适职过程、产品熟悉过程）”。