The woman on the witness stand in this story is being questioned about the murder that was committed one hundred years ago.
重点
witness stand意为“证人席”，commit the murder意为“谋杀”。
考点归纳
commit是英语六级考试中的重点词汇，常考的用法主要有：
commit作及物动词：
1) 做(不合法的、错的或蠢的事);犯(罪)。如：
commit murder 谋杀
commit suicide 自杀
2) commit...to...把……置于……状态;转交到……。如：
commit the man to prison 把这名男子送进监狱
3) commit sb./oneself to sth. 或commit sb./oneself to doing sth. 使……不得不做某事;向……保证。如：
He has committed himself to support his brother's children. 他已经答应了抚养他哥哥的孩子。
commitment作名词：
1) 奉献;承担责任。如：
Success is often attributed to dedication and commitment. 成功常常可以归功于投入和奉献。
2) 承诺，许诺，保证。如：
I felt I did not have to make such a commitment to them. 我觉得我没有必要对他们作出这样的承诺。
