Definition: to make something sharper Level: C2
她做饭前磨了刀。
She ___sharpened the knife before cooking.
你需要削尖铅笔才能正确书写。
You need to ___sharpen the pencil to write properly.
艺术家每天早晨削尖他的铅笔以确保线条精确。
The artist ___sharpens his pencils every morning to ensure precise lines.
