A lot of companies do in-house training.

许多公司都进行内部人员培训。

《柯林斯英汉双解大词典》

Yes. All our new employees will go through our in-house training.

是的。我们所有的新员工都要参加公司内部培训。

youdao

This may include building up an in-house training and coaching capability.

这要求建立起内部的培训和指导能力。

youdao

When students graduate, they move on to 14 days of Sprint in-house training, where the advice gets more refined.

CNN: Dressed For Success

Want to know how little I understood what I was doing, having just matriculated from the brokerage house training program?

FORBES: Is PIMCO's Bill Gross Right About Bonds?

In 1929, a country girl, Chiyo, is sold into bondage at a Kyoto training house for geishas, a house ruled by the foul-tempered Mother (Kaori Momoi) and a nasty top geisha, Hatsumomo (Gong Li) the equivalents of a wicked step-mother and stepsister.

NEWYORKER: Memoirs of a Geisha