If tea is a factor in the combination lock, why didn't Japan forge ahead in a tea-soaked industrial revolution of its own?

如果茶叶是解开密码锁的要素的话，为什么在一次茶叶起着重要作用的工业革命中，日本本身并没有取得进展呢？

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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.

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。

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Where lock-in is a factor, it is wrong to suppose that consumers and producers will blunder on as if it were not.

ECONOMIST: Economics Focus: Lock and key | The