| 例句 |
semicircle noun
⇨ curve curve noun curve ♦︎ arc ♦︎ loop ♦︎ curvature ♦︎ crescent ♦︎ arch ♦︎ semicircle ♦︎ parabolaThese are all words for a line or shape that is not straight but bends. 这些词均表示曲线、弧线、弧形。PATTERNS AND COLLOCATIONS 句型和搭配◆in a curve / an arc / a loop / a crescent / an arch / a semicircle / a parabola◆(a / an) downward / upward curve / arc / curvature◆(a) slight curve / arc / curvature◆(a) graceful curve / arc / curvature◆a gentle / smooth curve / arc◆a tight curve / loop◆a delicate curve / arch◆to form a curve / an arc / a loop / an arch / a semicircle◆to draw a curve / an arc / a semicircle / a parabola■ curve [countable] a line or surface that bends gradually; a smooth bend 曲线；弧线；曲面；弯曲◆The pattern was made up of straight lines and curves.图案由直线和曲线构成。◆The program automatically plots the curve on a graph.这个程序自动在图上绘出一条曲线。◆ (especially NAmE) The park is located on a curve in the road just past a large church on your left.公园在道路拐弯处，过了左手边的大教堂就是。 see also bend ⇨ corner ■ arc [countable] part of a circle or curved line; a curved shape 弧；弧形◆The arc of the rainbow reached out across the valley.弯弯的彩虹架在山谷上方。◆The beach swept around in an arc.海滩呈弧形伸展开来。◆ (geometry 几何) Set the point of the compasses at one end of the line and draw an arc.将圆规的尖置于这条线的一端画一个弧。■ loop / /luːp/ / [countable] a shape like a curve or circle made by a line curving right round so that it crosses itself or nearly crosses itself 环形；环状物；圆圈◆The road went in a huge loop around the lake.那条路环湖绕了一个大圈。◆Duclair is a small town on a loop of the River Seine.迪克莱尔是塞纳河河曲地区的一座小城。■ curvature / /ˈkɜːvətʃə(r); NAmE ˈkɜːrvətʃər/ [uncountable] (technical 术语) the state of being curved; the amount that sth is curved 弯曲；曲度；曲率◆From 60 miles up, the curvature of the earth is clearly visible.在60英里的高空，地球的曲度清晰可见。■ crescent /ˈkresnt, BrE also ˈkreznt/ [countable] a curved shape that is wide in the middle and pointed at each end 新月形；月牙形◆The crescent moon was shining dimly in a cloudless sky.天空晴朗，新月朦胧。■ arch [countable] anything that forms a curved shape at the top 拱形；拱形物◆He studied the delicate arch of her eyebrows and the smooth curve of her jaw.他端详她那弯弯的柳眉和下颌光滑的曲线。▸ arch verb [transitive, intransitive] ◆The cat arched its back and hissed.那只猫弓起背发出嘶嘶声。◆Tall trees arched over the path.大树呈拱形遮阴了小道。■ semicircle /ˈsemisɜːkl; NAmE ˈsemisɜːrkl/ [countable] one half of a circle; a thing, or a group of people or things, shaped like one half of a circle 半圆；半圆形◆At the front of the stage was a semicircle of chairs for the prize winners.舞台前面是为获奖者准备摆成半圆形的椅子。◆We sat in a semicircle around the fire.我们坐在炉火前，围成半圆形。▸ semicircular adjective ◆The main building has four large columns and a semicircular driveway.主楼有四根大柱子和一个半圆形车道。■ parabola /pəˈræbələ/ / [countable] (geometry 几何) a curve like the path of an object thrown into the air and falling back to earth 抛物线◆A ball thrown over a long distance travels in a parabola.球扔出很远，在空中划出一道抛物线。 |