The scientists say the pain relief stems from the body’s natural response to minor tissue injury.

科学家们称，人体对轻微组织破损的自然反应缓解了疼痛。

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There are minor changes occurring on the Earth's surface all of the time, and these are quite natural and usually present little danger.

有在地球表面发生的时间在所有的小变化，而这些都是相当自然，通常出现小的危险。

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There are natural cotton crystal, mineral, concave surface, the natural normal function of any minor damage, is not a quality problem.

天然水晶内有棉絮、矿质、冰裂、表面凹点、天然轻微破损都属正常现象，不属品质问题。

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She aimed for the hope that it was natural, normal, a minor way of hardening the heart against later shocks.

NEWYORKER: Wasps

Patients who retain even a minor amount of natural insulin production are far less likely to go blind or fall into a coma from insulin overdosage than those who lose all their islet cells.

FORBES: Delaying Diabetes

Helium, unlike most other gases, is a minor byproduct in the production of natural gas.

CNN: U.S. needs a strategy on helium