rough diamond prices have fallen even more, as much as 75 percent since their peak last july at some auctions.
鉆石原石价格下跌更严重。 比起去年7月在一些拍卖会上拍出的最高价,原始价格下降多达75%。
she was a rough diamond before she went abroad to work, now she's a sophisticated, poised woman.
在到美国工作前她是一个见识不多的人,现在却成为一个又成熟又有品味的淑女。
i know he looks a bit of a rough diamond in his tattered jeans , but apparently he does a lot of good work for local charities.
我知道他穿着破烂的牛仔裤看上去有些浑金璞玉的样子,但清楚他是为当地的慈善事业做了许多有益的工作。
debswana, the diamond-mining joint venture between de beers and the botswanan government, controlled about 27 per cent of the rough diamond market in 2008.