speak up有流利的意思么

没有！speak up的意思是：（尤指为某人辩护或抗议某事）大胆地说，公开表态;大声说;提高嗓门。

例句：

1. Above all, speak up if you are having any technical difficulty.最重要的是，如果你有任何技术困难，就得大胆地说出来。2.I'm quite deaf — you'll have to speak up.我耳背——你得大声说。2.Speak up, and fight back大声说出来有力地回击