Examples
zhè wèi这位lǎo shī老师yòng用shì yàn试验lùn zhèng论证le了zhè ge这个xiǎng fǎ想法。
这位老师用试验论证了这个想法。
The teacher demonstrated the idea with an experiment.
这位老教授的讲座冗长而沉闷。
The old professor's lectures are long-winded and ponderous.
请问，这位女士是什么人？
Excuse me, who is this woman?