太陽活動 tài yáng huó dòng

DEFINITIONS

  1. sunspot activity
  2. solar variation

CHARACTERS

太 tài
HSK 1
very, too, much; big; extreme
陽 yáng 'male' principle; light; sun
活 huó
HSK 4
live, exist, survive; lively
動 dòng move, happen; movement, action