Pecvd
等离子[体]增强CVD
🗣️ 情景例句
He has an old head on young shoulders.
他年轻又有见识。
Study sickness while you are well.
居安思危。
While the battered car was moving away, Roy stopped his bus and telephoned the police.
当那辆被撞坏的车开走后，罗伊停下车，给警察挂了电话。