bound 
英 [baʊnd]  美 [baʊnd] 
n. 跃起；跳跃；界限，限制，范围

v. 限制，束缚；（使）弹回，弹起，跳跃

adj. 装订的，有封面的；结合的；用带子绑住的；有义务的；受约束的

例句：
writers whose writings know no bound 

写作范围没有限制的作家们

With one bound Jack was free. 

杰克一跳就挣脱了。

She leaps in one bound onto her pony's back for a speedy canter around the ring. 

她纵身一跃跳到了小马背上，绕场快跑起来。