Lets practice some useful English.
The picture above is a fuel gauge(燃料計) that is common to see in a car.
The “E” means “empty”. The “F” means “full”.
These are very useful words to use everyday in English. For example,
I have no energy today. I feel like I am running on empty. (If you are in a car, we would say that you are “driving on empty”. Which means you have no fuel. For humans we say “running on empty”.
My bank account is empty. I need to start saving more money.
I’m full. I can’t eat anymore. This means that my stomach is full.
President Trump is full of shit. This is a very casual way to say that someone is always lying and they are “full” of lies.