变数

A feeling, type of behavior, or physical process that happens as a result of something else. In science, it refers to chemical or physiological changes.

Partial, local, or a specific part of a whole. It is used to contrast with 'global' or 'total'.

To say or estimate that a specified thing will happen in the future or will be a consequence of something. Common in data interpretation.

To release, set free, or emit. It can refer to letting a person go, releasing energy in a chemical reaction, or emitting gases.

To connect; to link.

Happening or changing slowly over a period of time. It describes a steady, incremental process.

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Very small or weak in strength, light, sound, or intensity.

The state or process of a species, family, or larger group being or becoming extinct. A core concept in TOEFL passages about dinosaurs or environmental conservation.

To pass through or into every part of something; to permeate. In social science, it refers to the gradual spread of ideas or influence.