stumble
英 ['stʌmb(ə)l]
美['stʌmbl]
	    - vi. 踌躇,蹒跚;失足;犯错
 - vt. 使…困惑;使…绊倒
 - n. 绊倒;蹒跚而行
 
英英释意
- 1. an unsteady uneven gait
 
- 2. an unintentional but embarrassing blunder;
 - "he recited the whole poem without a single trip"
 - "he arranged his robes to avoid a trip-up later"
 - "confusion caused his unfortunate misstep"