利用张量和模代数知识，构造出了自由丛的浸入子丛和任一模丛的浸入子自由丛。

The immersed subbundles of free bundles and the immersed free subbundles of any module bundles are constructed, by using theoretics of tensor and module algebra.

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现在，两只小鸟“一看到我就从灌木丛或树上冲出来，想要站到我的肩膀上，或是帽子上，不过通常对不准目标，一下子冲到墙跟前去了，又赶忙飞高。”

And now the birds "come streaming at me from bush and tree, trying for a landing on shoulder or cap, usually overshooting me in the fog and bringing up against a wall."

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仿佛他用自己的厚靴子无情地践踏了一丛野风信子。

It was as if he had hacked with his thick boots at a clump of bluebells.

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