Cách sử dụng
The expression "red in tooth and claw" means that in the natural world, animals have to be aggressive and sometimes violent in order to survive. It is often used to describe a tough and competitive situation where people or organizations will do whatever it takes to succeed, even if it means being ruthless or aggressive. An example sentence would be, "The business world can be red in tooth and claw, with companies fighting fiercely to come out on top."