1. 极强烈的；势不可挡的；令人不知所措的
    If something is overwhelming, it affects you very strongly, and you do not know how to deal with it.

    e.g. The task won't feel so overwhelming if you break it down into small, easy-to-accomplish steps...
           如果将这个任务细分为简单易行的若干步骤来做，便不会感到如此无所适从。
    e.g. She felt an overwhelming desire to have another child.
           她一心想再要一个孩子。

2. （数量）巨大的，压倒性的
    You can use overwhelming to emphasize that an amount or quantity is much greater than other amounts or quantities.

    e.g. The overwhelming majority of small businesses go broke within the first twenty-four months...
           绝大多数小企业在头两年内就破产了。
    e.g. The party won an overwhelming victory in Burma's general elections last May...
           去年5月，该党在缅甸大选中获得了压倒性的胜利。