In order to calculate the centroid of this shape, you need to know the area of each part and the position of its centroid.

He always has a high sense of alertness.

He has a strong ambition and is always seeking self-improvement.

The sand is dancing in the wind in the desert.

Caddisworms play an important role in the river ecosystem.

The fragrance of the sweet osmanthus is spreading throughout the garden.

On nights when the 'katsura flower' (a euphemism for the moon) shines beautifully, I feel special.

Snowflakes are piling up on the window glass, creating a beautiful scenery.

She loves the scent of jasmine flowers.

This dish has a faint aroma of oregano.