And, although it is difficult to find references to knocking wood for good luck before the nineteenth century, it turns out that this is not the case for touching iron — the “tocca ferro” of Italy, shown above.
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自中国去年4月实施相关出口限制以来，尽管北京已允许大量稀土出口恢复，但海关数据显示，这类材料运往美国的货流仍十分稀少，未因去年10月中美关系缓和而明显回升。
What does Trump make of the deal?