First, it depends on your degree of familiarity with them.

首先，要取决于你和对方的熟悉程度。

youdao

This depends entirely on his high degree of familiarity with art.

这完全取决于他的艺术认识高度。

youdao

Secondly, the higher the degree of familiarity between interactants is, the less formal the greeting type is;

交际双方的熟悉程度越高，所使用的问候语类型也就越不正式；

youdao

The workshop (13-14 December 2004) aimed to give participants an overview and degree of familiarity about the digital frontier, orient participants on techniques, issues and technology for digitizing and increasing access of their AV materials, and provide a venue to define or describe issues, obstacles and alternatives regarding digitization in the Asian context.

UNESCO: Education