n.留心，注意
... note 笔记 heedfulness 深切注意 attentiveness 注意 ...
... 留心 = regardful 留心的状态 = heedfulness 留残梗 = stubbling ...
The quality or practice of being advertent; heedfulness.
注意，留心：注意的特性或行为；留心。
So these qualities of consistency, care, and heedfulness are important in allowing this state of concentration to develop.
因此，为了让这个定境展开，持恒、仔细、审慎等这些素质是十分重要的。