| 单词 | Christmas tree |
| 释义 | Christmas tree 1. an evergreen tree decorated at Christmas with ornaments and lights. 2. a control board or panel containing a variety of colored lights for indicating the status of various functions, elements, components, etc. 3. an elaborate arrangement of pipes, valves, etc., as for controlling the flow of oil or gas. [1780-90, Amer.] |
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