由英国金属咨询机构虚拟金属(Virtual Metals)和三井全球贵金属公司(Mitsui Global Precious Metals)的Halliburton矿业服务机构汇编的套期保值报告显示，54家进行套期保值的黄...
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
The tightening of America's trade rules has resulted in a virtual standstill in mining in the volatile eastern part of the country, until recently the source of rare metals used by American manufacturers.
ECONOMIST: Middle East and Africa: A sub-Saharan spring? | The
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