balance beam
US /ˈbæl.əns biːm/
UK /ˈbæl.əns biːm/
1.
平衡木
a long, narrow piece of wood or other material, typically 10 cm wide, on which gymnasts perform balancing exercises
:
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The gymnast performed a flawless routine on the balance beam.
体操运动员在平衡木上完成了一套完美的动作。
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She practiced for hours on the balance beam to perfect her moves.
她在平衡木上练习了数小时，以完善她的动作。