求翻译：毛泽东曾云：“诗言志”。透过其诗词的字里行间，可以深深感受到这一点。就他已经正式发表的诗词来看，都写在革命的关键时刻，其中不少作品还是“在马背上哼成的”。是什么意思？

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Mao Zedong: "Chi" poem. Through his poetry, the lines can be deeply felt. He has now been officially released on the poetry, it is a critical moment of the revolution in many of which work on the horse or the humming on the.

Mao Zedong Zeng Yun: “Poem word will”.Penetrates its poetry between the lines, may deep feel this point deeply.The poetry already officially published which on him looked that, all wrote in the revolutionary critical moment, in which many works “humph becomes on the horseback”.

Mao Zedong: "poem expressing ideal". Through his poetry between the lines, you can feel this. He has published poems, written on the key moments of the revolution, and many of them work or "on horseback well into".

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