The fourth reason is economic.

第四个原因是出于经济上的考虑。

youdao

And that leads to the fourth reason for optimism.

这成为值得乐观的第四点理由。

youdao

The fourth reason is the lack of self-knowledge philosopher.

第四个原因是哲人本身缺乏自知之明。

youdao

The fourth reason is the lack of self-knowledge philosopher.

第四个原因是哲人本身缺乏自知之明。

youdao