| 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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