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1. Oxford American Dictionary

   focus

   • IPA[ˈfōkəs]

   美式

   • n.
     the center of interest or activity；an act of concentrating interest or activity on something
   • v.
     (of a person or their eyes) adapt to the prevailing level of light and become able to see clearly；cause (one's eyes) to focus

   • verb: focus, 3rd person present: focuses, gerund or present participle: focusing, past tense: focused, past participle: focused

   • noun: focus, plural noun: foci

2. • 釋義

   n.

   名詞

   • 1. the center of interest or activity this generation has made the environment a focus of attention 同義詞 center, focal point, central point, center of attention, hub, ... 更多pivot, nucleus, heart, cornerstone, linchpin, kingpin, bedrock, basis, anchor, backbone, cynosure
   • ▪ an act of concentrating interest or activity on something our focus on the customer's requirements 同義詞 emphasis, accent, priority, attention, concentration, ... 更多weightage, subject, theme, concern, subject matter, topic, issue, question, text, thesis, content, point, motif, thread, substance, essence, gist, matter
   • ▪ the point of origin of an earthquake.
   • ▪ the principal site of an infection or other disease.
   • 2. the state or quality of having or producing clear visual definition his face is rather out of focus 同義詞 focal point, point of convergence
   • ▪ another term for focal point
   • ▪ the point at which an object must be situated with respect to a lens or mirror for an image of it to be well defined.
   • ▪ a device on a lens which can be adjusted to produce a clear image.
   • 3. one of the fixed points from which the distances to any point of a given curve, such as an ellipse or parabola, are connected by a linear relation.
   • 4. the part of a sentence given prominence, usually for emphasis or contrast, e.g., Bob in it was Bob who came, not Bill.

   v.

   動詞

   • 1. (of a person or their eyes) adapt to the prevailing level of light and become able to see clearly try to focus on a stationary object
   • ▪ cause (one's eyes) to focus trying to focus his bleary eyes on Corbett
   • ▪ adjust the focus of (a telescope, camera, or other instrument) they were focusing a telescope on a star 同義詞 bring into focus, bring to a focus, aim, point, turn
   • ▪ (of rays or waves) meet at a single point.
   • ▪ (of a lens) make (rays or waves) meet at a single point.
   • ▪ (of light, radio waves, or other energy) become concentrated into a sharp beam of light or energy.
   • ▪ (of a lens) concentrate (light, radio waves, or energy) into a sharp beam. 同義詞 bring into focus, bring to a focus, aim, point, turn
   • 2. pay particular attention to the study will focus on a number of areas in Wales
   • ▪ concentrate an opportunity to focus research on the health needs of the population 同義詞 concentrate, fix, center, pivot, zero in, ... 更多zoom in, address itself to, pay attention to, pinpoint, spotlight, revolve around, have as its starting point
   • 3. place the focus on (a part of a sentence).