dollar (EN)

名词

名词 “dollar”

1. 美元
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   She paid ten dollars for the book.
2. （带“the”）美元的市场价值
   The dollar weakened today compared to yesterday.
3. （在核物理中）一种核反应堆反应性的单位，等于延迟临界和瞬发临界之间的差。
   The safety report mentioned a reactivity increase of 0.3 dollars.
4. （历史，英国）价值五先令或四分之一英镑的硬币。
   In Victorian times, a "dollar" referred to a British crown coin.