名词
中文翻译：灯管
同义词：
['light bulb tube', 'lamp casing例句：1. The lamp tube was broken and needed to be replaced.（灯管坏了，需要更换。）2. The lamp tube is the part of the light bulb that allows light to pass through.（灯管是灯泡中让光线通过的部分。）']
例句：
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1. The lamp tube was broken and needed to be replaced.
灯管坏了，需要更换。
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2. The lamp tube is the part of the light bulb that allows light to pass through.
灯管是灯泡中让光线通过的部分。
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3. The lamp tube is made of glass and contains a filament inside.
灯管由玻璃制成，内部装有一根丝线。