dual rate system双重: double; dual; twofold; dupli ...运费: transportation expenses; fre ...制度: system; institution双重汇率: dual exchange rate; two-tier ...制: make; manufacture下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:双重运费制度, 双重汇率制,即可在微信中查询翻译