/ˌʌnˈnesəsəri; US -serɪ ||; ʌnˈnɛsəˌsɛrɪ/adj
more than is needed or acceptable 不必要的;不需要的;多余的:
We should try to avoid all unnecessary expense.我们应设法避免所有不必要的开支。☞Look at needless, which has a different meaning. 参看needless,意思不同。 [OPP] necessary 反义词为necessary➔unnecessarily /ˌʌnˈnesəsərəli ;ˌʌnˌnesəˈserəli ||; ʌnˈnɛsəˌsɛrəlɪ; ʌnˈnɛsəˌsɛrəlɪ/ advHis explanation was unnecessarily complicated.他的解释不必要地复杂。