activated

• 形容某物已被启动、开启或使其处于工作状态，常用于技术或科学语境。

Describes something that has been made active or operational, often used in technical or scientific contexts.

1. Made active or operationalB2formal

   Put into operation or made ready for use.

   已激活

   • The alarm system was activated at midnight.
   • The device is activated by pressing the red button.
   • Once activated, the software will run automatically.

   同义词engagedoperationaloperative

   反义词disabledoffstopped

2. Chemically treatedC1formalscientific

   Treated with a process to make it more reactive or absorbent.

   活化的

   • Activated charcoal is used to filter impurities from water.
   • The lab uses activated carbon in its filtration system.
   • Activated alumina is effective for removing fluoride.

   反义词neutralizedstabilized

• 动词，表示使某物进入活跃、工作或可用的状态；也指启动或启用某项功能、设备或程序。

A verb used to indicate the act of making something active, operational, or functional.

1. Make something start workingB1formal

   To cause something to become operational or active.

   激活

   • Press the button to activate the alarm system.
   • You need to activate your account by clicking the link.
   • The device activates automatically when you open the lid.

   同义词actuateenergizeinitiatestartswitch ontriggerturn on

   反义词deactivatedisableshut offstopturn off

2. Trigger a process or reactionB2formalscientific

   To initiate a chemical, biological, or physical process.

   激活

   • The enzyme activates the reaction in the cell.
   • Sunlight activates the vitamin D production in your skin.
   • The catalyst activates the chemical transformation.

   同义词actuateexciteigniteinitiatekindleset offsparkstartstimulatetrigger

   反义词blockdeactivatehaltinhibitstopsuppress

3. Make someone more activeB2informal

   To cause someone to become more energetic or involved.

   使活跃

   • The coach's speech activated the team's motivation.
   • A good breakfast can activate your energy for the day.
   • The workshop activated the participants' creativity.

   同义词animateenergizefire upgalvanizeinvigoratemotivaterousespurstimulatestir

   反义词calmdeactivatepacifyquietsubdue