<p class="ql-block">健康，就像快乐一样，很难明确地定义。当我们生病时，渴望能拥健康;但在健康状况良好时，就忘记它的重要性了。</p><p class="ql-block"><br></p> <p class="ql-block">Health, like happiness, is hard to define precisely. When we are ill, we long for </p><p class="ql-block">health; yet when we are in good health, we forget its importance.</p><p class="ql-block">—Adelle Davis [USA]</p>