Electronic tube
[电] 电子管
🧩 词语组成解析
🗣️ 情景例句
Maybe Lillian will be at the reunion.
或许Lillian也会参加聚会。
When a dog is drowning,every one offers him drink.
待到狗溺水，众人给水喝。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。