That's all but it's no mere figure of speech though one can make figures enough about it in his poetry very often.

他说的就是这些，不只是语言，虽然人可以说很多这样的话，经常在他的诗歌中这样。

youdao

A figure of speech consisting of an understatement in which an affirmative is expressed by negating its opposite, as in This is no small problem.

间接肯定法用有节制的陈述所构成一种修辞手法，即通过否定其反面来表达肯定的意思，例如在这并不是一个小问题中。

youdao

That's all but it's no mere figure of speech though one can make figures enough about it in his poetry very often].

他说的就是这些，不只是语言,虽然人可以说很多这样的话,经常在他的诗歌中这样。

耶鲁公开课 - 现代诗歌课程节选

Tuesday kicks off (no mere figure of speech, this) with questions (at 2.30pm) to the Deputy Prime Minister, Nick Clegg, and his smoothly diplomatic deputy, Mark Harper.

BBC: Viewing guide: The pick of the week ahead in Parliament