Arcjet
电弧火箭, 电弧加热等离子体射流
🗣️ 情景例句
It was my please.
荣幸之至。
An ambulance will be here in no time.
救护车马上就到。
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，