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1. The braking rocketswere used to slow down the spacecraft.
制动火箭被用来减缓宇宙飞船的速度。
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2. Thebraking rockets were designed tomake the spacecraft more stable.
制动火箭的设计是为了使宇宙飞船更加稳定。
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3. The braking rockets were used to controlthe trajectory of the spacecraft.
制动火箭被用来控制宇宙飞船的轨迹。