“BMX bicycle”的概念、定义、翻译、参考文献-科学参考

单词	BMX bicycle
释义	BMX bicycle [´bē´em´eks `bī´sik·ǝl] ^{MECHANICAL ENGINEERING} A small, extremely strong, type of bicycle, having generally 20-inch (500-millimeter) wheels, large-cleat (knobbly) tires, upright but not high-rise handlebars, and a seat positioned more towards the rear wheel than on a conventional bicycle, and used for stunt riding and tricks.
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