Magnaglo
电磁紫外线探伤法, 玛格纳络磁性粉末
🗣️ 情景例句
Do you live on or off campus?
你住在校内还是校外？
Please tell him to stop jumping up and down.
请告诉他不要调上跳下。
Check the prices before you decide whether to buy one.
先把价格核对一下，再决定该不该买。