毫无结果

1.Their search for the plane is fruitless.

他们对飞机的搜寻是毫结果的。

2.After repeated but fruitless demands for payment,he brought a suit against the debtor.

在再三要求支付而毫结果的情况下,他向债务人提出诉讼。

3.This is a barren argument.

这是一场毫结果的争论。

4.Our first experiment was a blind alley, but the second one gave us very promising results.

我们的第一次试验毫结果，不过第二次试验取得了十分可喜的结果。