求翻译：另外，应注意保暖背部和足部，中医认为，背部是人体经脉中足太阳膀胱经循行的主要部位，足太阳膀胱经具有防御外邪侵入的作用是什么意思？

In addition, should keep warm on the back and foot, Chinese medicine, meridians in the body back bladder full sun through the line of the main parts of the bladder full sun with the role of invasive evils defense

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Moreover, should pay attention maintains warmth the back and the foot, the Chinese medicine believed that, the back is in the human body passages through which vital energy circulates the foot sun urinary bladder after follows a line of main spot, the foot sun urinary bladder after has the defense e

In addition, be aware of warm back and foot, traditional Chinese medicine believes that in the back of the body meridians of foot-Taiyang bladder through the main part of the line, Sun urinary bladder meridian of foot had an evil intrusion by outside the defense role

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