1·The messenger bent and scratched at his knee where the strapping chafed.
信使弯身挠膝盖上被带子擦痛的地方。
—— 《柯林斯英汉双解大词典》
2·They even put their noses to the ground and scratched their heads.
他们甚至把鼻子贴在地上，挠着头。
3·When the team scratched the leg without first creating the artificial itch, the STT neurons fired — the normal STT-neuron response — but the scratching did nothing to calm them.
当研究小组在没有人工制造瘙痒感的时候给它的腿挠痒，STT神经元也激发了，但只是普通的激发而且挠痒也无法使其镇定下来。
4·When the team scratched the leg without first creating an artificial itch, the STT neurons fired — the normal STT-neuron response — but scratching did nothing to calm them.
当研究小组在没有人工制造瘙痒感的时候给它的腿挠痒，STT神经元也激发了，但只是普通的激发而且挠痒也无法使其镇定下来。
5·In fact, in some older men and women, it remains a driving force, an itch that wants to be scratched, even if there is not an appropriate or available partner.
一些有一把年纪的男女即使没有合适或在身边的伴侣还是会被它鼓动，如奇痒难忍，不挠不快。