动力

A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation; to take something as true for the sake of argument.

To regularly check, track, or observe something for a specific purpose, such as health, environment, or performance. A key term for IELTS Academic reading and writing.

A series of events that are regularly repeated in the same order. It can refer to time, biological processes, or economic patterns.

Relating to the human mind and its functions, especially those affecting behavior in a given context. It is a frequent topic in education and health sections of the IELTS.

To remove or eliminate something from consideration or a physical space. Crucial for describing experimental controls or logical deductions.

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. It is a fundamental category in biological classification.

An element, feature, or factor that is liable to vary or change. In research, it is the specific thing being measured or controlled in an experiment.

Matter from which a thing is or can be made, or information/documentation used as a basis for research. It covers both physical substances and abstract data.

A small part or quantity intended to show what the whole is like. Essential for describing research methodology and statistics in IELTS.

A number or value indicating an amount or level. Used frequently in IELTS Task 1 to describe specific points on a graph or chart.