1. （用在书面语中表示惊讶、生气或高兴）哈
Ha is used in writing to represent a noise that people make to show they are surprised, annoyed, or pleased about something.

1. (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing
the right ascension for an observer at a particular location and time of day

Synonym: hour angle