人口human population; size of a family
入口transported into; put in the mouth
努力make an effort/efforts to do something; with one's best efforts
千thousand; a great amount/number of
墙wall; object shaped or functioning like a wall
平时normal/ordinary times; peacetime
怕be afraid of; be unable to bear
数字characters that denote amounts; numeral
球场a ground where ball games are played
瓶bottle; the quantity contained in a bottle, vase or jar
省inspect; examine oneself critically
篇a piece of writing; a sheet of paper
起飞take off; get off to a good start
轻light; small in number, degree, etc.