伦敦商品交易所和纽约商品交易所的铜金属价格双双下滑，锌、镍、铅、锡等金属的价格有所下降。
Copper resumed a decline in London and New York. Aluminum, zinc, nickel, lead and tin also fell.
这国家最有价值的商品包括锡和钻石。
The country's most valuable commodities include tin and diamonds.
锡曾是商业中的一个关键商品，因为它经常被用来与内地经销商交换茶叶，所以其价格的上升和下降都可能会影响到茶叶的利润。
Tin was a key commodity in the commerce, and because it was often exchanged for tea with inland dealers, its rise, and fall in price could affect tea profits.
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