until they succeed
直到他们成功
以上为机器翻译结果，长、整句建议使用 人工翻译 。
They try again and again until they succeed.
他们一次又一次地尝试，直到成功。
youdao
Then try their best again and again until they succeed.
他们会不断地努力直到成功。
They feel compelled to try and try again until they succeed.
他们觉得必须尝试，再尝试，直到成功。
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