“to little avail”造句，怎麼用to little avail造句

A series of ads shown before cinema screenings portrays people who speak in the theatre as bumpkins and buffoons-so far to little avail.

Banking consolidation has long been talked about in the gulf-to little avail.

So far, the EU and America have refused to recognise the legitimacy of the elections and are demanding the release of prisoners-to little avail.

In 1912 German doctors attempted to treat children who had underactive thyroids with normal thyroid cells, but to little avail.

I tried to persuade him not to resign but it was to little avail.