词典释义：
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Oh, because you're Parzival, as in the knight who found the Holy Grail by himself.
因为你是帕西法尔，那个单枪匹马找到圣杯的骑士。
《Ready Player One》《头号玩家》
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You saw what this man can do all by himself. Can you imagine what would happen if we woke up the rest of his crew?
你已经看到了，那人一个人就做了些什么，你能想象如果我们唤醒了其他人会发生什么吗?
《Star Trek Into Darkness》《星际迷航：暗黑无界》
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But, the silver lining, if you wanna see it, is that he made the decision all by himself without any outside help whatsoever.
但有一线希望，如果你愿意这么看，他完全是自己做了这个决定，完全没有受外人的影响。
《Friends Season 2》《老友记 第二季》
双语例句
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He was doing it all by himself.
全都是他独自一个人干的。
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He lives all by himself.
他独自一人生活。
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He managed to repair the car by himself.
他自己设法修了汽车。
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He walked a little by himself in the garden.
他在花园里独自散了会儿步。
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He had tried to detox twice by himself, but couldn't.
他曾两次试图自行脱瘾，但是没做到。