yǔ / dǎzhì / shíqì / xiāngbǐ / mózhì / shíqì / de / biǎomiàn / gèng / píngzhěng / rènkǒu / yě / gèng / fēnglì

与打制石器相比，磨制石器的表面更平整，刃口也更锋利。

Compared with chipped stone tools, polished stone tools have smoother surfaces and sharper edges.