Their search for the plane is fruitless.

他们对飞机的搜寻毫无结的。

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

在再三要求毫无结的情况下,他向债务人提出诉讼。

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

我们的第一试验毫无结，不过第二试验取得了十分可喜的结。

This is a barren argument.

一场毫无结的争论。