Pentode
n. 五极管, 电子五极管\\n[电] 五极管
🗣️ 情景例句
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His confidence can be destroyed by a harsh word.
他的信念，只要受到严厉的批评就会崩溃。
My pen dropped on the ground when I was walking in the park.
当我在公园里散步的时候，我的钢笔掉到地上了。