launching catapult升空: lift-off; levitation弹射器: catapult; ejector低空弹射: low ejection; low-level ejection高空弹射: high ejection; space shot空弹射击: dry fire; dry firing下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:升空弹射器，即可在微信中查询翻译
