He was cutting down a tree.

There are many trees standing straight in that park.

A beautiful Cleyera japonica is planted in my garden.

I live a 5-minute walk from Sakaki Station.

He built a new fence in the garden.

Mr. Saku is my best friend.

I am thinking of a new marketing plan.

Mr. Zhai is my best friend.

Yesterday, I bought a new book.

Please calculate the value of the sine, which is one of the trigonometric functions.