当原材料生产商和买家的对冲要求不符时，投机者填补这一空白，从而避免这一交易无人问津。
Speculators plug the gap when the hedging requirements of raw-material producers and buyers do not coincide, offering a counterparty for trades that might otherwise have no takers.
盖姆表示，招聘要求往往是几乎无人具备的具体工具知识或编程语言。
Mr Game says job descriptions often demand detailed knowledge of tools or programming languages that few will have.
巴基斯坦也要求美方停止使用无人机袭击其部落地区，该袭击行动去年还有所增加，据称已击毙几名“高价值”的目标，同时也杀害了多名平民。
Pakistan has also demanded that the US cease drone attacks on its tribal area, which have increased over the last year, allegedly killing several "high-value" targets as well as many civilians.
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