roach back

• 弓背

roach back的用法和样例：

例句

1. My animal had a quarter-moon back and a camel gait.
   我的这头牲口的弓背象一弯新月，迈步象骆驼一样缓慢。
2. Lift yourself vertically, rather than arching your back and leaning backwards.
   要竖直地站直，而不是弯腰弓背或是向后倾斜。