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Varicose veins in the legs occur when the valves in a vein near the surface of the skin malfunction.
當皮膚表面下的血管的閥門不起作用時，腿上的靜脈曲張開始顯現。
Valves usually keep blood from flowing backwards in the vein once it's been pumped towards the heart.
閥門的作用是防止有心臟送出的血液回流。
When the valves don't work properly, blood backs up the vein, causing it to swell and twisr.
當閥門不正常工作時，血液不能流動，導致血管膨脹和扭結。
Although varicose veins are usually associated with senior citizens, not every older person hasthem.
雖然靜脈曲張多發生在老年人身上，但是不是每個老年人都患有這種病。
Weak valves are often inherited, and can also be caused by wearing clothing that squeezes the legs and veins too tightly.
脆弱的閥門通常是遺傳的，或者身上的衣服把腿和血管勒的太緊導致的。
Varicose veins may seem unsightly, but they're not usually a cause for major concern.
靜脈曲張是很難看的，但是它們通常不會引起強烈的關注。
If you have them and want to do something about it.
然而，如果你有這種病并想要治療。
Treatments range from wearing strong support stockings to surgery.
治療方法包括從穿修復性的長筒襪到做外科手術。
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