bumbling around 笨手笨脚地忙碌
bumbling error 笨拙的错误
bumbling manner 笨拙的样子
A: Why did he bumble through the presentation?
A：为什么他在演讲时表现得那么笨拙？
B: He bumbles because he is extremely nervous.
B：他说话结结巴巴是因为他非常紧张。
1) 笨手笨脚地行动
2) 说话结结巴巴
3) 嗡嗡作响
1. 笨手笨脚地做；说话结结巴巴
verb
1. to act, speak, or work in a clumsy, confused, or ineffective way
Synonym: stumble, bungle