Recommend chain, but well-trained usage chain demand equal strong basic achievement.Therefore suggestion everyone more practice.To much do laundry by hand act as to jilt stem machine.

• 推荐链条(主要是自行车的附加品例如车锁和车链)，但是熟练使用链条需要相当强的基本功。因此建议大家多加练习。要多洗衣服，用手充当甩干机。