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exercise
The word centers on the concept of 'active application.' Whether it is applying effort to a muscle, a mental faculty, or a legal right, there is always an element of intentionality and repetition. In physical contexts, it carries a positive, disciplined connotation. It differs from "workout" in that "exercise" can be broader (e.g., walking) and more formal, whereas "workout" usually implies a specific session of intense training. When used as a task or mental drill, it suggests a structured approach to learning. It is less about discovery and more about reinforcement through practice. In the context of power or rights, it is highly formal. To "exercise" authority isn't just to have it, but to put it into active operation. This usage is common in legal, political, and professional environments.
Uncountable when referring to the general concept of physical activity for health ('exercise is good for you'). Countable when referring to a specific task, drill, or academic problem ('a difficult math exercise').
意味
Activity regularly performed to improve health and physical fitness.
"Regular exercise is essential for maintaining a healthy heart."
A task or activity performed to develop a skill or test knowledge.
"The teacher gave the students a grammar exercise to complete at home."
To use or apply a faculty, right, or power.
"The president decided to exercise his right to veto the bill."
To train or develop a skill through repetition.
"You must exercise your imagination to solve this puzzle."