That means that there is a fine line between what is permissible and what is not.

这意味着，在允许和不允许之间的界限很微妙。

youdao

White on toes and slim white snip on center line of face permissible.

白色足爪或在脸部中间出现白筋是允许的。

youdao

The determination method and computing formula of the permissible lateral and vertical deviation of arbitrary point on axial line of the target are discussed and derived.

讨论并推导了靶体轴线上任一点的允许横向偏差和允许纵向偏差的规定方法和计算公式。

youdao

To be sure, from the Bible to Buddhism, most of the world's faiths have issued warnings against usury, and theologians through the ages have debated the line between permissible and excessive interest rates.

FORBES: Magazine Article

Whatever the spirit of the law, dancing close to, but not over, the line of what's permissible in the law's letter is a daily concern for groups like these.

CNN: The real risk of the IRS scandal