The shadow of the tree is "lead gray", cold and domineering, which makes people worry. This is a copy of its shape, and Nightmare is a person's feelings, not a painting of its spirit. From form to spirit, the shadow of a tree represents an indifferent and influential species in the life world. They are strong and powerful, occupying a unique terrain and trying their best to exert influence on the surrounding living environment. And the stream is too small after all. It is fresh and lively, full of youthful yearning. But in the shade, it completely lost its sunshine and freedom. You see, under the "lateral pressure" of the tree, it is almost motionless ("sleepy"). In the world of life, young and lively life is often so weak that it is often cruelly oppressed by another species. Is this the reality of life?
But the stream that yearns for freedom is unwilling to yield. It "struggles, struggles ……" two continuous "struggles" vividly convey the tenacity and persistence of the flow. It will not give up its ideals and pursuits because of this, but will do its best to fight to the death. Perhaps this is a rare sense of freedom and enterprising in the life world. Without such awareness, any weak life will not break free from the oppression of the strong and carve out a development path for itself in the thorns everywhere. Without such consciousness, the evolution of the whole life world is impossible. This is the difference between the life consciousness of a stream and a deserted garden. The abandoned garden is full of self-pity for the fallen, while the stream is the rise and struggle of self-consciousness.
The last sentence is a little vague in understanding. What do you mean by "it seems to have no influence at all"? Is it that the stream has "no influence at all" on the struggle against the lateral pressure of tree shadows? (This is a fact) Does the horizontal pressure of the tree shadow "have no effect at all" on the operation of the stream? However, as readers, we also have reason to believe that this ambiguity was set by the poet Wen Yiduo. In modern poetics, "ambiguity" is just a compliment. William Empson's Seven Types of Ambiguity comprehensively discusses the importance of ambiguity in poetry creation, which fully shows the independent characteristics of poetry as a special language. Empson's famous exposition was published in 1930, which was of course unknown to Wen Yiduo in the early 1920s. However, we should see that careful scrutiny and study of poetic language is a major trend of symbolism to reduce western poetry, which did not begin with the critic Yan Bu-sun. Wen Yiduo was studying in the United States at that time, and he had been paying close attention to the development of modern western poetry. We can't say that he doesn't want to try ambiguity and ambiguity.
Here, the ambiguity of the sentence just enriches the meaning of the poem itself: the horizontal pressure of the tree shadow is not affected, and the harsh reality of the life world can be known; The rushing of the stream is not affected, which shows the tenacity and persistence of the new life. We live in a world where these two powerful forces can be seen everywhere. The competition in life always wins at the most critical moment.