focus
focus
(pl. focuses 或 foci ˈfəʊsʌɪ)
[no obj.]
focuser
noun
语源
(pl. focuses 或 foci ˈfəʊsʌɪ)
- the centre of interest or activity
兴趣（或活动）的焦点
this generation has made the environment a focus of attention.
这一代人使环境成为关注焦点。
■an act of concentrating interest or activity on something
重视
our focus on the customer's requirements.
我们对消费者需求的重视。
■(Geology)the point of origin of an earthquake
(地质)地震震源。 比较 epicentre
■(Medicine)the principal site of an infection or other disease
(医)病灶，疾源地
■(Linguistics). another term for rheme
(语言学)。 同 rheme - [mass noun]the state or quality of having or producing clear visual definition
图像（成像）清晰度
his face is rather out of focus.
他的脸有些模糊。
■another term for focal point
同 focal point
■[count noun]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
成像清晰点
■[count noun]a device on a lens which can be adjusted to produce a clear image
（透镜）调焦装置 - (Geometry)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
(几何)（椭圆、抛物线等曲线的）焦点
[no obj.]
- (of a person or their eyes) adapt to the prevailing level of light and become able to see clearly
（人，眼）调整视力以看清楚
try to focus on a stationary object.
设法调整视力以看清楚一静物。
■[with obj.]bring (one's eyes) into such a state
调节（眼睛的）焦距
trying to focus his bleary eyes on Corbett.
设法把他模糊的视线聚焦于科比特。
■[with obj.]adjust the focus of (a telescope, camera, or other instrument)
调节（望远镜、照相机等器械）焦距
they were focusing a telescope on a star.
他们正对着一颗星调节望远镜焦距。
■(of rays or waves) meet at a single point
（光线，波）聚焦
■[with obj.](of a lens) make (rays or waves) meet at a single point
（透镜）使（光线，波）聚焦
■[no obj.](of light, radio waves, or other energy) become concentrated into a sharp beam of light or energy
（光，无线电波等）集中成束，聚焦
■[with obj.](of a lens) concentrate (light, radio waves, or energy) into a sharp beam
（透镜）（光，无线电波等）聚焦 - (focus on)pay particular attention to
把注意力集中于，重视
the study will focus on a number of areas in Wales.
该研究将重点针对威尔士若干地区。
■[with obj.]concentrate
集中
the course helps to focus and stimulate your thoughts.
该课程有助于集中并激发你的思维。
■[with obj.](Linguistics)place the focus on (a part of a sentence)
(语言学)以（句子的一部分）为焦点（或重心）
focuser
noun
语源
- mid 17th cent. (as a term in geometry and physics): from Latin, literally domestic hearth'
考试词汇表
