Observing the movement of the celestial sphere is a fundamental part of astronomy.

His piano performance was skillful in modulation, captivating the audience.

He skillfully modulated in the music.

He is making a large profit from reselling sneakers.

He immediately resold the item he had just purchased.

This article is prohibited from reprinting.

This article was reprinted with the author's permission.

Every time he spoke, he quoted classical allusions to show off his knowledge.

He accurately understood the location of the pressure points.

He was afraid that his actions would invite divine punishment.