So far all efforts to find a cure have been unsuccessful but the German discovery has raised hopes in some quarters.

到目前为止，所有寻找治愈方法的努力都以失败而告终，但是德国的这项发现在某些方面带来了希望。

youdao

Since last year, the company has been unable to sell its products, but it was the recent unsuccessful foreign trade deal that hastened its bankruptcy.

自去年以来，这家公司的产品就一直滞销，但加速其倒闭的却是最近的一笔不成功的外贸生意。

youdao

Since last year , the company has been unable to sell its products , but it was the recent unsuccessful foreign trade deal that has tened its bankruptcy.

自去年以来，这家公司的产品就一直滞销，但加速其倒闭的却是最近的一笔不成功的外贸生意。

youdao

The BBC has tried to contact Henson through his agent but has so far been unsuccessful.

BBC: Henson's pub behaviour questioned

He went to university in Liverpool, but he has been involved in two previous bids that were unsuccessful.

FORBES: End Game At Liverpool

But some argue that the government's attempts at modifying loans has been unsuccessful, noting that the Treasury Department estimates that the program may reach only half of the 4 million struggling borrowers it was intended to help.

FORBES: Magazine Article