September a changeling, busy a squirrel a hickory tree, idle a languid brook.是什么意思？

September a changeling, busy a squirrel a hickory tree, idle a languid brook.

九月真是变幻莫测, 忙来如山核桃树上的松鼠, 闲来却又象懒散缓流的小溪.

September

n. 九月，[电影]情怀九月天；

例句
...the agenda for the September 12 board meeting.
9月12日董事会议的议程

changeling

n. 矮小丑陋的小孩，低能儿；

例句
I have always felt like a changeling born into the wrong family.
我一直感觉自己小时候被调包过，不是这一家的人。

busy

adj. 忙碌的，占线，繁华的，爱管闲事的；vt. 忙着做某事，使奔走，使经营；n. 〈英俚〉侦探，包打听；

例句
When not producing art of his own, Oliver was busy advancing the work of others.
奥利弗在不搞自己的艺术创作时，就会忙着帮助别人完成作品。

squirrel

n. 松鼠，松鼠科动物，松鼠毛皮；vt. 储藏，贮存；

例句
September a changeling, busy a squirrel a hickory tree, idle a languid brook.
九月真是变幻莫测, 忙来如山核桃树上的松鼠, 闲来却又象懒散缓流的小溪.

hickory

n. 山胡桃树，山胡桃木；v. 杖责，鞭打；

例句
September a changeling, busy a squirrel a hickory tree, idle a languid brook.
九月真是变幻莫测, 忙来如山核桃树上的松鼠, 闲来却又象懒散缓流的小溪.

tree

n. 树，木料，树状图，宗谱；vt. 把…赶上树，使处于困境，把鞋型插入（鞋内）；

例句
If the soil is allowed to dry out the tree could die.
如果听任土壤变干，树木可能会枯死。

idle

adj. 无意义的，空闲的，懒惰的，无根据的；vi. 虚度，空转，挂空挡，未熄火；vt. 虚度，使空转；n. （尤指暂时地）关闭工厂，使（工人）闲着；

例句
Employees have been idle almost a month because of shortages.
由于原料短缺，员工们已将近一个月无事可做。

languid

adj. 疲倦的，没精打采的，呆滞的，萧条的，慢吞吞；

例句
To his delight a familiar, tall, languid figure lowered itself down the steps of a club.
看到一个熟悉的高大身影沿着俱乐部的台阶无精打采地走下来，他高兴极了。

brook

vt. 容忍，忍受；n. 小溪；

例句
...the Bow Brook which forms the western boundary of the wood...
构成了这片树林西部边界的鲍溪