词汇	slingshot model
释义	slingshot model 引力弹弓模型
随便看	abu simbel Abu Simbel Abu Simbel, Abu Simbil ABu Simbel Temple Abu Simbil a business A business card A business class ticket to Beijing please a business college a business company a business doctor a business empire A business establishment or office a business firm went insolvent a business investment A business loss a business lunch a business luncheon a businessman a business man A businessman must wed efficiency to thrift A businessman subscribes to the charity A business meeting of parishioners in a parish A business must stay in the black to keep on a business opening