Derivatives model an unknown price from today's known market prices.
衍生品试图以今天已知的市场价格为基础推导出一个未知的价格。
An Infantino spokesman said 10, 000 of the recalled slings had been sold to the UK market, although an unknown number could still be in stores.
Infantino的一位发言人说，从英国市场召回的背巾已有一万条，不过可能还有部分背巾作为库存并未售出，数量尚不明确。
Last weekit filed a suit against unknown investors who had profited in theoptions market before the announcement of a takeover of TXU, the Texanutility.
上周它冻结了一些匿名投资者500万美元利润并提起了诉讼，原因是他们在德州事业（证券代码TXU）被收购的消息发布前，通过期权市场进行套利活动。
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