It is no secret that the fruits of language study are in no sort of relation to the labour spent on teaching and learning them.

It is no secret that the fruits of language study are in no sort of relation to the labour spent on teaching and learning them.

众所周知，语言学习的成果与教授和学习语言的劳动没有任何关系。

-- Edward Sapir 爱德华·萨皮尔