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1. Oxford American Dictionary

   activity

   • IPA[akˈtivədē]

   美式

   • n.
     the condition in which things are happening or being done；busy or vigorous action or movement

   • noun: activity, plural noun: activities

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. the condition in which things are happening or being done there has been a sustained level of activity in the economy the only sign of human activity now is the boatload of day-tripper from the mainland
   • ▪ busy or vigorous action or movement the room was a hive of activity 同義詞 bustle, hustle and bustle, busyness, action, liveliness, ... 更多movement, life, stir, animation, commotion, flurry, tumult, hubbub, excitement, agitation, fuss, whirl, happenings, occurrences, proceedings, events, incidents, informaltoing and froing, comings and goings, to-do, archaichurry-scurry, pother反義詞 calm
   • 2. a thing that a person or group does or has done the firm's marketing activities 同義詞 pursuit, occupation, venture, undertaking, enterprise, ... 更多project, scheme, business, job, affair, task, campaign, interest, hobby, pastime, recreation, diversion, entertainment, act, action, deed, doing, exploit, maneuver, informalthing, lark, caper
   • ▪ a recreational pursuit or pastime a range of sports activities 同義詞 pursuit, occupation, venture, undertaking, enterprise, ... 更多project, scheme, business, job, affair, task, campaign, interest, hobby, pastime, recreation, diversion, entertainment, act, action, deed, doing, exploit, maneuver, informalthing, lark, caper
   • ▪ actions taken by a group in order to achieve their aims they are forced to fund political activities they disagree with
   • 3. a thermodynamic quantity representing the effective concentration of a particular component in a solution or other system, equal to its concentration multiplied by an activity coefficient.

   activity tracker

   • n.
     a wearable device or a computer application that records a person’s daily physical activity, ... an activity tracker motivates you to get up off your sofa and do some exercise a tiny activity tracker that slots into a wristband

   Oxford Dictionary

   displacement activity

   • n.
     an animal or human activity that seems inappropriate to the context, such as head-scratching ...

   Oxford American Dictionary

   displacement activity

   • n.
     an animal or human activity that seems inappropriate, such as head-scratching when confused, ...

   Oxford Dictionary

   optical activity

   • n.
     the property (displayed by solutions of some compounds, notably many sugars) of rotating the ...

   Oxford American Dictionary

   specific activity

   • n.
     the activity of a given radioisotope per unit mass.

   Oxford American Dictionary

   specific activity

   • n.
     the activity of a given radioisotope per unit mass.

   Oxford Dictionary

   activity tracker

   • n.
     a wearable device or a computer application that records a person’s daily physical activity, ... an activity tracker motivates you to get up off your sofa and do some exercise a tiny activity tracker that slots into a wristband

   Oxford American Dictionary

   optical activity

   • n.
     the property (displayed by solutions of some compounds, notably many sugars) of rotating the ...

   Oxford Dictionary

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3. • 更多解釋

   activity

   • IPA[akˈtɪvɪti]

   英式

   • n.
     the condition in which things are happening or being done: there has been a sustained level of activity in the economy the only sign of human activity now is the boatload of day trippers from the mainland

   Oxford Dictionary