Kaede is my best friend.

This room needs heating.

Please heat the coffee.

We need to replace it with a new system.

He said he wanted to sling his arm.

He bought new glue for the project.

A river dolphin is a rare type of dolphin that lives in freshwater.

I need a replacement blade for my razor.

If the book is cheap, I should buy it.

Yeah, that's a good idea.