这些测量确实和疼痛有关，不过没有一项能准确到代替自我报告。
These measures correlate with pain, but nothing has been accurate enough to substitute for self-reports.
科学家一直在研究一项不依靠病人自我报告的、能精确测量出疼痛感的方法，却一直不得要领。
Scientists have been searching for an accurate way to measure pain beyond a patient's self-report, but to no avail.
除开病人的自我报告，医生们对疼痛的测量几乎一筹莫展。而有一些病患在他们遭受苦痛时根本不能表达出来。
Physicians gauging pain have little to go on besides a patient's self-report. And some sufferers simply can't communicate how they're feeling.
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