/baʊndz; baundz/
n [pl]
1 limits 界限
*keep within/go beyond the bounds of reason, sanity, decency, propriety, etc 有[没]理性、理智、体统、礼貌等
* It is not beyond the bounds of possibility (that...). （...）不是不可能的.
* Are there no bounds to his ambition? 他的野心难道没有止境吗?
* Public spending must be kept within reasonable bounds. 公共事务的开销必须保持在合理的范围以内.
2 (idm 习语) know no bounds => know. out of `bounds (to sb) (US off limits) (of a place) not to be entered or visited (by sb) （指某地方）禁止（某人）入内; 谢绝（某人）参观
*The town's pubs and bars are out of bounds to troops. 军人不得进入城里的酒馆和酒吧.