舞者们动作同步，整齐划一。
The dancers moved in ___synchronous motion.
两颗卫星以完全同步的周期绕行星运行。
The two satellites orbit the planet in perfectly ___synchronous revolutions.
赛艇队动作同步地划动船桨，掠过平静的湖面。
The rowing team pulled their oars in ___synchronous strokes across the calm lake.
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