Doubly closed tube
[电] 双闭管
🧩 词语组成解析
doubly
[['dʌbli]]
adv. 加倍地, 双重地\\n[计] 双地
closed
[klozd]
adj. 关闭着的，封闭着的;密闭着的，保密的;<美>准备好了的，定了契约的;
v. “close”的过去式和过去分词;
clos=close关闭+ed已...的→关闭了的
🗣️ 情景例句
and use their talents.
贡献他们的才能。
Happens all the time.
常有的事。
I was so excited that I wanted to tell the whole world what we had found.
我激动得想要告诉全世界我们发现了什么。