最初在1938年专为重型循环，B33是唯一的模式，仍然滞留后方弹簧和前循环。

Originally designed in 1938 for heavy duty cycling, the B33 is the only model still featuring stranded rear coil springs and a front loop.

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最初在1938年专为重型循环，B33是唯一的模式，仍然滞留后方弹簧和前循环。

Originally designed in 1938 for heavy duty cycling, the B33 is the only model still featuring stranded rear coil springs and a front loop.

youdao