英汉词典

1. 一定地;必要地
    If you say that something is not necessarily the case, you mean that it may not be the case or is not always the case.

    e.g. Anger is not necessarily the most useful or acceptable reaction to such events...
           对于这种事，发火不见得是最有用或最能被接受的反应。
    e.g. Speed and safety are not necessarily incompatible...
           速度和安全未必不相容。

2. 不可避免地;必然地
    If you say that something necessarily happens or is the case, you mean that it has to happen or be the case and cannot be any different.

    e.g. The most desirable properties necessarily command astonishingly high prices...
           最值得拥有的财产必然要价不菲。
    e.g. Tourism is an industry that has a necessarily close connection with governments.
           旅游业是与政府有着必然的密切联系的产业。