They have been unfruitful in their efforts.
他们都徒劳而归.
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The parable of the unfruitful tree represented God's dealings with the Jewish nation.
那不结果子之树的比喻,足以显明上帝怎样对待犹太国.
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I prepared unfruitful year with Mr. Fleagle and for a long time was not disappointed.
我作好准备,打算在弗利格尔先生的班上一无所获地混上一年,不少日子过去了,还真不出所料.
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