Optron
光导发光元件
🗣️ 情景例句
He is new at the work to the work.
他没有做这项工作的经验。
Their grandchildren are grown up now.
他们的孙子现在长大了。
Do you want a chicken,Mrs. Bird?They 're very nice.
您要买只鸡吗，伯德夫人？这些鸡很好。