"Firs" Natural Recordings by Native Speakers
The word "firs" refers to a type of evergreen coniferous tree, typically conical in shape, with needle-like leaves and small cones. It can also refer to the early years of something, such as a company's "early firs" or a person's "early firs" of education.
Examples of "First"
Firmicutes is a phylum of bacteria that includes many types of gram-positive bacteria. Firmicutes bacteria are typically rod-shaped and have a thick peptidoglycan cell wall. This phylum includes many important genera, such as Bacillus, Staphylococcus, and Lactobacillus. Firmicutes are found in a wide range of environments, including soil, water, and the human body. They play important roles in decomposition, fermentation, and biocontrol, and some species are also important human pathogens.
First-come-first-served is a principle of allocation or distribution where the people or entities that arrive or request it first are given priority and served before those who arrive later. In other words, it means that the order of service or allocation is determined by the order of arrival or request, with the first ones being served first, regardless of their need, priority, or importance.
The phrase "first-in-last-out" is a mnemonic device used to remember the order in which items are processed or removed from a Last-In-First-Out (LIFO) stack or queue. In a LIFO system, the item that was added first is removed last, and the item that was added last is removed first.