Magnaglo
电磁紫外线探伤法, 玛格纳络磁性粉末
🗣️ 情景例句
We're in luck.
我们运气好。
How about Mary? How long has she lived there?
玛丽怎么样？她在那儿住多久了？
Two return tickets to London,please.
买两张到伦敦的往返票。