Once you can play a single clear note, then you will improve rapidly.

坚持练习吧，一旦你能准确地吹出单音符，以后的进步将是神速的。

youdao

This variability has led many people to think of it as a spectrum of symptoms rather than a single, clear-cut syndrome. And that variability makes it hard to work out what causes it.

这种多变性令很多人认为它的症状多样而不是单一明确的，这种多样化加大了对其病因的研究难度。

youdao

Make sure that your website has a single, clear navigation structure.

确保你的网站的导航结构单纯简洁。

youdao

Paul Bunyan could clear large wooded areas with a single stroke of his large, sharp axe.

VOA: special.2009.01.24

No single group is expected to win a clear majority.

VOA: special.2010.03.13

It was not tightly framed or focused on a single concept, nor was there a single clear phrase that summed up the speech, at least at first listen.

CNN: Obama's ringing defense of liberalism

Above all, Mr Hague has made the mistake this week of pinning his own stature as party leader on his ability to impose a single clear Euro-policy on the Conservative Party.

ECONOMIST: Roll up that map of Europe

The British-born athlete, now competing for Italy, was just a single centimetre clear of silver medallist Tatyana Kotova.

BBC: May's leap is just enough