hand-operated

Thân thiện

A farmer uses a hand-operated pump to draw water from a well.

Definition

1. Adjective:
   • Operated by hand: Describes a device, machine, or tool that is powered or controlled by human hand movement, rather than by electricity, an engine, or an automatic system.

Usage

• The adjective "hand-operated" is used to modify nouns, typically coming before the noun it describes (e.g., a hand-operated pump). It describes the method of operation.
• It is often used in technical, mechanical, or practical contexts to distinguish manual tools from powered ones.

Examples

• Adjective:
  • The museum displayed a collection of hand-operated printing presses from the 19th century.
  • For safety, the emergency brake is a hand-operated lever.
  • In remote areas without electricity, farmers often rely on hand-operated water pumps.

Advanced Usage

• "to be hand-operated": Used in a predicate adjective structure.
  • This valve is hand-operated and requires no external power source.

Variants and Related Words

• Manual (adj): Often used synonymously with "hand-operated" to describe non-automatic control or operation. (e.g., ).
• Crank-operated (adj): A specific type of hand-operated device that uses a crank.
• Hand-cranked (adj): Similar to crank-operated, emphasizing the turning action.

Synonyms

• Manual: Operated or controlled by hand.
• Non-automatic: Not operating by itself; requiring human intervention.
• Hand-powered: Powered by human hand force.

Antonyms

• Automatic: Operating by itself with little or no direct human control.
• Motorized: Equipped with or driven by a motor.
• Electric: Powered by electricity.
• Power-operated: Operated by a source of power other than human force.

Học thuật

Adjective

1. operated by hand

Từ đồng nghĩa

• non-automatic