A straight back can mean an active life, but a weak spine-perhaps the result of heredity, deterioration or nervous or muscular disorders-can lead to incapacity and medical complications.
直挺挺的脊柱成就彩色人生，但脆弱的脊椎往往因遺傳、退化、神經肌肉疾病等等，導致變形無力而產生病變。