赌注高：这些孩子们常常需要住院治疗变得更好，有的甚至死于这种疾病。
The stakes are high: These children often have to be hospitalized to get better, and some even die from the disease.
这是巨大的挑战，并且赌注是相当高的。
另外一个因素是：据分析人士说，交易员最近几周在看跌美元上押了非同一般高的赌注，他们可能希望通过逆转这类交易而锁定利润。
Another factor: Traders have placed an unusually high volume of bearish bets against the U.S. dollar in recent weeks and may want to lock in profits by reversing those trades, analysts say.
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