Permatron
[计] 磁控管
🗣️ 情景例句
Are you sure? But ... OK.
你确定吗？ 但……算了。
She succeeded in persuading her parents.
她成功地说服了父母。
I know. I can help him with most of his subjects.
我知道。我可以帮助他学习绝大多数科目。