是非

这种前沿探索为进一步深化现代是非研究提供了宝贵的第一手资料。

zhè zhǒng qián yán tàn suǒ wèi jìn yí bù shēn huà xiàn dài shì fēi yán jiū tí gōng le bǎo guì de dì yī shǒu zī liào.

This pioneering exploration provided valuable primary material to further the study of modern right and wrong.

做人做事必须旗帜鲜明辨明是非曲直，决不能为了迎合他人而在大是大非问题上和稀泥。

zuò rén zuò shì bì xū qí zhì xiān míng biàn míng shì fēi qū zhí, jué bù néng wèi le yíng hé tā rén ér zài dà shì dà fēi wèn tí shàng huò xī ní.

When doing things, one must have a clear-cut stand and distinguish right from wrong, and one must not compromise on major issues of right and wrong in order to cater to others.