Pool-cathode tube
[电] 汞弧管
🧩 词语组成解析
pool
[pul]
n. 水池;石油层;（液体等的）一滩;共同储金;
vi. 使形成池塘或水洼;淤积;合伙经营;采（煤等）;
cathode
[['kæθəud]]
n. 阴极\\n[化] 阴极
🗣️ 情景例句
I want to buy an engagement ring for my fiancée.
我想为我的未婚妻买一枚订婚戒指。
Childhood shows the man, as morning shows the day.
看人看年少，看天看破晓。
Can we do anything to help?
用我们帮忙吗？