英汉词典

1. 经历；接受；遭受；忍受
    If you undergo something necessary or unpleasant, it happens to you.

    e.g. New recruits have been undergoing training in recent weeks...
           最近几周，新兵正在接受训练。
    e.g. He underwent an agonising 48-hour wait for the results of tests.
           他苦苦等待了48个小时，化验结果才出来。