人口human population; size of a family
历史process of the development of Nature and the human society; past records
发财get rich; ask somebody where he or she works by way of asking where he or she makes a fortune
变become different; change in nature or state
变化change in the state or nature of things;change
古典classical allusion; classical
国家country; complete territory of a country
度linear measure; degree of hardness, heat, density, humidity
开放come into bloom; lift a ban, restriction, etc.
时差time difference; equation of time
春天spring; an environment full of hope and energy
暖气central heating system; heating equipment
滑冰skating; glide/skate/slide on ice
过去leave or pass by where the speaker or listener is for somewhere else;die
迟到arrive later than the arranged time
迷be fascinated by; be confused
避暑avoid/escape summer heat; avoid/prevent sunstroke