He must master 2 cultures and 2 languages.

他必须熟知2种文化、2种语言。

youdao

At present has physician-in-charge, professor 1, deputy chief physician 2, doctor 1, master 2, the graduate student leads 1, goes abroad to study returns personnel 1;

目前有主任医师、教授1名，副主任医师2名，博士1名，硕士2名，硕士研究生导1名，出国留学归来人员1名；

youdao

There are 2 switchable master volumes and 2 switchable presence controls.

有2个可切换的主卷和2个可切换的状态控件。

youdao

We have to master Storytelling 2.0 before we can cope with Storytelling 3.0.

FORBES: Leadership Storytelling 3.0: From Arithmetic to Calculus

Mr Gehring has evidence that the two interchangeable genes act as master switches which activate at least 2, 500 others whose interplay ultimately determines that development.

ECONOMIST: Genetic science

Inspired by prehispanic temples, the villas are as large as 2, 500 square feet with master bedrooms, kitchens, outdoor terraces, private pools and deep soaking tubs made from stones weighing over one ton.

FORBES: Mexico's Imanta Resort Sits Pretty On The Riviera Nayarit