1、 Migrating animals maintain an intense attentiveness to the greater mission,which keeps them undistracted by temptations and undeterred by challenges that would turn other animals aside.
迁徙动物对于更宏大的使命保持着高度专注，这一使命让它们不会被诱惑分散注意力，也不会被挑战吓倒，这些挑战可能会让其他动物转变方向。
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2、 But our level of attentiveness tends to drop off over time.
但我们专注的水平随着时间推移而逐渐降低。
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