the strongest will may falter when the goal is to lose 50 pounds in three months or to ...the strongest will may falter when the goal is to lose 50 pounds in three months or to exercise three hours a
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这句话写错了,把稿件中编辑的用词窜到正文里了.正确的句子应该没有add：
The strongest will may falter when the goal is to lose 50 pounds in three months or to exercise three hours a day.Failure undercuts your desire to try again.
很容易猜出是怎么回事.初稿中没有“Failure undercuts your desire to try again”这句,编辑时小编或作者在行间用笔加了“add：Failure undercuts your desire to try again”（add是“加”,即“加一句”）,秘书打终稿的时候没想就把add也打进去了.
======以下答案可供参考======
供参考答案1:
add，undercuts也是动词，failure是名词，
add的是failure然后underucts你的desire.
就是 增加 挫败感 削弱 你再次尝试的欲望！
add failure undercuts
动词 名词 动词