Of all the compontents of a good night's sleep,dreams seem to be least within our control.求翻译？

Of all the compontents of a good night's sleep,dreams seem to be least within our control.求翻译？

句中有错词" compontents "应为" components成分、部件 "。
先说句子意思“在一个安详的睡眠的所有成因中，梦似乎至少都在我们控制当中。”
所以，of在此表示"……之中"，修饰"dream"，接名词性定语从句。