Yesterday morning a juggernaut towing a trailer drove in to park alongside the curb of the house just next to mine.  It came to trim the branches of the gigantic tree in the middle of the houses front yard because the branches, twigs, and leaves of the tree have grown so thick that they have almost covered all of the house. 

Lets see how to trim a huge, tall tree with machines.  The driver got down from high-level seat and got himself into a gondola controlled by a remote, and raised him up to every position he wanted to reach.  He cut the branches with an electrical saw, and less than half an hour he cut down all excessive branches onto the yard and the alley beneath him.  Then I saw him using his phone to call in a helper with whom they collected the branches and put them into the trailer, actually a stirring machine.  The roaring machine soon smashed all of the broken branches into dusts and ashes, and conveyed them to a big gunnysack through a pipe. 

That was what the machine did within an hour.

P.S. Almost every single house has trees planted in its front yard here in America residental area, even they are small ones like the apple tree and the orange tree in my daughters.