| 单词 | light bulb |
| 释义 | light bulb 1 ENTRIES FOUND: light bulb noun plural light bulbs light bulb noun plural light bulbs Learner's definition of LIGHT BULB [count] : a glass bulb or tube that produces light when it is supplied with electricity电灯泡；电灯管
— called also bulb a light bulb goes off/onchiefly US, informal ◊ When a light bulb goes off/on (in your head), you suddenly understand something or have a great idea.突然明白；恍然大悟；灵光一现。
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