He had the long sleeves of his white shirt pushed up to his elbows, and his forearm was surprisingly hard and muscular beneath his light skin.

他的白衬衣的长袖管挽到了手肘以上，他的小臂结实得惊人，雪白的肌肤下全是肌肉。

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The skin-prick test: a drop of a solution containing the suspected allergen is placed on the skin of the subject's forearm, which is then pricked with a needle.

皮肤点刺试验：在受试者前臂皮肤上滴上一滴含有疑似过敏原的溶液，然后用针刺。

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The researchers performed the procedure on sun-damaged forearm skin of the 25 volunteers and took tissue samples to examine the changes in the skin.

研究人员在25个志愿者的晒伤的前臂皮肤完成这一程序，并取了组织样本来检查皮肤内的变化。

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With their new laser in hand, Dr Leitgeb and his colleagues set up an experiment that let them test the system on a range of skin conditions, including a healthy human palm, allergy-induced eczema on the forearm, inflammation of the forehead, and two previously diagnosed cases of basal-cell carcinoma.

ECONOMIST: A better way to diagnose skin cancers