阅读下面这首宋词，完成后面的题目。(8分)
渔家傲^①
王安石
灯火已收正月半，山南山北花撩乱。闻说洊亭^②新水漫，骑款段^③，穿云入坞寻游伴。　　却拂僧床褰素幔^④，千岩万壑春风暖。一弄松声悲急管，吹梦断，西看窗日犹嫌短。
[注] ①这首词作于作者退隐之后寄身山寺时。②洊(jin)亭：在钟山西麓，是作者喜爱游赏的风景胜地。③款段：马行迟缓貌，这里指作者所骑的毛驴。④褰素幔：撩起白色的帷帐。
请赏析“穿云入坞寻游伴”一句的妙处。(4分)
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下片写自己孤身栖居山寺所感，抒发了怎样的思想感情？(4分)
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