People confined to wheelchairs often suffer urinary, respiratory, cardiovascular and digestive-system problems, as well as osteoporosis and pressure sores.
长期坐在轮椅上容易得泌尿系统、呼吸系统、心血管、消化系统等多种疾病，会造成骨质疏松，尤其是容易长褥疮。
They can also cause problems for your digestive system.
它们也能给你的消化系统造成问题。
Dietary fiber is incredibly important for your health: it helps to improve your digestive system and avoid problems like constipation.
膳食纤维对你的健康非常重要：它有助于改善你的消化系统，避免便秘等问题。
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