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单词 hop
释义 hop
[häp]
BOTANY
Humulus lupulus. A dioecious liana of the order Urticales distinguished by herbaceous vines produced from a perennial crown; the inflorescence, a catkin, of the female plant is used commercially for beer production.
COMMUNICATIONS
A single reflection of a radio wave from the ionosphere back to the earth in traveling from one point to another.
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