They don't have access to a convertible currency. 他們無法得到可兌換貨幣。
Of course for now the yuan is not a convertible currency and China has considerable work to do to clean up its financial system before that can change. 當然,人民幣目前還不是可自由兌換貨幣,而在人民幣實現可自由兌換之前中國還需大力整頓其金融體系。