[單字] 此處job當動詞的意思?
Procrastination, suggests a new study, is an evolved trait that likely served
humans well in a time when finding food and water and fending off prey were
job one.
想請問這邊的job當甚麼意思？
查了一下，但感覺都不太對，後面接的one 又代表甚麼呢？
http://www.thefreedictionary.com/job
整句是說：
拖延，是一種演化後的特質，很可能是為了要讓人們在覓食、狩獵可以_____
下面這句是段落後的舉例，但還是推測不出意思...
For man in the state of nature, pondering lofty goals for an indistinct
future was sure to result in an early demise.
人性如此，幻想高遠而模糊的目標，往往提早失敗。
謝謝
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