adj.伸延过长的;承担过多的
v.使 ... 承担过多的义务; 过分延伸; 过分展开(动词overextend的过去式和过去分词形式)
He overextended himself when he accepted the additional assignment . 当接到额外的任务时,他过度紧张。
The company overextended itself and was soon out on a limb. 该公司扩展得太快,很快便陷入困境。