研究者必须区分事实、推测和个人观点。Yánjiūzhě bìxū qūfēn shìshí, tuīcè hé gèrén guāndiǎn.Researchers must differentiate between facts, speculation, and personal opinions.
双胞胎长得太像,很难区分谁是谁。Shuāngbāotāi zhǎng de tài xiàng, hěn nán qūfēn shéi shì shéi.The twins look so alike that it is hard to tell who is who.
请把可回收垃圾和其他垃圾区分开。Qǐng bǎ kě huíshōu lājī hé qítā lājī qūfēn kāi.Please separate recyclable waste from other waste.