制動火箭 zhìdònghuǒjiàn retro-rocket Definitions Defs Origin Strokes Stroke Words Sentences Sents 制动 制動 zhìdòng to brake To apply the brakes; to cause a moving machine or vehicle to slow down or stop.火箭 huǒjiàn noun rocket High-speed vehicle propelled by reaction force, used for launching satellites and spacecraft or as a missile weapon.
