For some unaccountable reason, as Arthur Dimmesdale felt the child's eyes upon himself, his hand - with that gesture so habitual as to have become involuntary - stole over his heart.

出于某种难以名状的原因，阿瑟·丁梅斯代尔感到孩子助目光落在他身上时，他的手以习惯成自然的姿势，悄悄捂到了心口上。