求翻译：核桃含有丰富的不饱和脂肪酸，这种物质不仅能预防动脉粥样硬化，预防脑血管病，而且是构成大脑细胞的重要物质之一。因此，中医认为核桃具有补脑益智的功效不是没有道理的。是什么意思？

Rich in unsaturated fatty acids in walnut, this substance can not only prevent atherosclerosis, cerebral vascular disease prevention, and is one of the important substance of brain cells. So, believe Walnut brain puzzle effect of traditional Chinese medicine it is not unreasonable.