名词
中文翻译：灯泡
同义词：
['bulb', 'light source']
例句：
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1.The new light bulb is more energy-efficient than the old one.
这个新灯泡比旧的更节能。
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2.The engineer replaced the old light bulb with a brighter one.
工程师用一个更亮的灯泡替换了旧的。
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3.The bulb flickered and went out, so we had to turn on the lights manually.
灯泡闪烁并熄灭了，所以我们不得不手动打开灯。