Hubs: These days all bicycle hubs from major manufactures provide a stress-free spoke foundation.
航空枢纽港：这些天从所有主要枢纽自行车制造商提供了一个无压力的发言的基础。
A spoke on his bicycle was lost, so he had to buy another one and fix it.
他自行车车轮上的轮辐丢了，得再买一个装上去。
A spoke on his bicycle was lost, so he had to buy another one and fix it.
他自行车车轮上的轮辐丢了，得再买一个装上去。
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