The product received the DIA award of merit and impressed the company by trebling sales.这一产品获得DIA(澳大利亚设计学会)优秀成果奖并且使公司的销售量增长了三倍....

三重，三倍...

trebling的音标：trebling的英式发音音标为：[t'reblɪŋ]trebling的美式发音音标为：[t'reblɪŋ]...