without the benefit of
or US without benefit of
: without the help of (something or someone)没有…的帮助；未得益于 -
The band had to perform without benefit of a rehearsal.乐队不得不在未经彩排的情况下上台演出。
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He was able to learn a great deal without the benefit of formal schooling.虽然没有受过正规教育，他还是学到了很多东西。
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You shouldn't try to handle this problem without benefit of a lawyer.在没有律师帮助的情况下，你不该费劲儿去处理这个问题。
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They lived together without (the) benefit of marriage. [=without being married]他们没结婚便同居了。