Parental guidance suggested.

家长指导建议。

Nowadays many TV programs need parental guidance.

现在许多电视节目需要家长知道观看。

Someone needs to tell the parents that good intentions alone may not constitute parental guidance.

有人需要告诉家长：祖训或许并不只是由美好的目的构成的。

Some of you have suffered from the care or lack of care from a parent. There can be too little or too much parental guidance.

你们之中一些人可能忍受或者缺乏父母一方的关爱。

PG-13 — Special parental guidance strongly suggested for children under 13. Some material may be inappropriate for young children.

父母指导，强烈建议为13岁以下的儿童。可能不适合年幼的孩子。