Maintain eye contact, lean in and pause when your faces are close but not touching, to allow the other person space to escape or, hopefully, lean in too.

保持眼神交流，靠近，当你们的脸接近但没接触时停下，给另一方停下或更希望的是，靠近一点的机会。

youdao

Furthermore, the New York Times notes that Samsung filed for a couple of trademarks this year named "Eye Scroll" and "Eye Pause".

BBC: Samsung set for crucial Galaxy S4 smartphone launch

It may not quite do that - but the live demo of the new translation service looked very clever, as did the standout eye-tracking feature which enables you to pause a video by simply looking away, then restart it by focusing on the screen again.

BBC: Samsung's New Galaxy - goodbye Google?