保持

To concentrate one's attention or energy on one thing; to be focused. It can also be an adjective describing a focused state.

Closely linked or inextricably related. Literally 'linked by every breath,' it describes a very intimate or vital connection between two things.

The surroundings or conditions in which a person, animal, or plant lives or operates; also refers to the natural world.

A helpful or good effect, or something intended to help. Advantages or benefits gained from something.

A condition in which different elements are equal or in the correct proportions. As a verb, it means to keep something in a steady position.

To stay away from someone or something, or to prevent something bad or unpleasant from happening. It is often used in the context of safety, health, or conflict.

To stop something from happening before it occurs, especially something unpleasant or harmful like a disease or accident.

To make something stronger, more effective, or more intense. It is used for both physical and abstract qualities.

The state of being free from illness or injury. In academic writing, it often refers to public health, lifestyle choices, or the 'health' of an economy.

To cause harm or damage to something or someone. In IELTS, it is frequently used to discuss the negative impacts of pollution, smoking, or bad habits.