| 单词 | balance beam |
| 释义 | balance beam 1. a narrow wooden rail about 16 ft. (5 m) long and 4 in. (10 cm) wide, set horizontally on upright posts about 4 ft. (1.2 m) from the floor, used for performing feats of balancing and demonstrating gymnastic ability. 2. a competitive gymnastic event for women in which such an apparatus is used. [1945-50] |
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