Contamin
康塔明铜锰镍电阻合金
🗣️ 情景例句
He's a lucky boy.
他是个幸运的孩子。
They had to call in a heart specialist.
他不得不请一位心脏病专家。
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。