Vacuum bulb
[电] 真空灯泡
🧩 词语组成解析
bulb
[bʌlb]
n. 球茎，块茎植物;电灯泡;[解剖学]肿块;
🗣️ 情景例句
No parking.
禁止停车。
Repetition is the mother of knowledge.
反覆学习是知识之源。
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。