Those who speak English, can you help?

It means they're explaining how it all works, basically.

There were explanations about each aspect of the business: the instruments, the software, the consumables and the services.

To break something down is to show how it is composed of individual parts, to explain the pieces that make up the whole. To break down a complicated problem is to break it into multiple smaller problems. The presenter is explaining that the business has four parts, four separate lines of business."Explaining the breakdown" implies that they're specifying details about the separation, for instance percentages.

For example: "Instruments account for 50% of our business, software and consumables account for 40%, and we also get 10% of our income from services".

Short answer yes. Good luck, thanks for trying to learn english, you can now travel to english speaking countries.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.