大多数人在学校表现不佳不是因为他们缺乏能力，而是因为他们觉得学校没有挑战性，因此失去了兴趣。
Most fared poorly in school not because they lacked ability but because they found school unchallenging and consequently lost interest.
一个是静态的生活和思想上没有挑战性可能很快变乏味。
A life that is static and intellectually unchallenging can quickly become boring.
虽然有这些成功案例，慢性病护理管理计划却并不是没有挑战性。
Despite the success stories, chronic care management programs are not without challenges.
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