| 词汇 | semicircle |
| 释义 | semicircle noun[ Cusually singular ] uk /ˈsem.iˌsɜː.kəl/ us /ˈsem.iˌsɝː.kəl/ half a circle: 半圆 We arranged the chairs in a semicircle.我们把椅子摆成半圆形。 /GettyImages Geometrical shapes -cornered circularly congruently conic cuboid cylindrically lozenge orbicular ovally ovoid parallelogram pentagon polytope prism pyramid quadrilateral rectangle rectangular rhombus three-dimensional semicircle | American Dictionarysemicircle noun[ C ] us/ˈsem·iˌsɜr·kəl/ geometry half of a circle, or something in this shape: Our tents were set in a semicircle. Examples of semicirclesemicircle Each circle-sphere containment is mapped into an incidence between a point and a semicircle. One young man stepped from the semicircle and motioned towards the one with the camera. Here parent trees had most likely died and left spaces in the centres of the semicircles of what are now their offspring. Another young man in the wider semicircle wore a baseball hat. Clearly, these semicircles form a collection of pseudo-segments, that is, each pair of them intersects at most once. He looked at the semicircle, including the four people on chairs. A radial line from the center of the semicircle to a given target location indicates intact orienting at that target location. We recorded birds which appeared within a semicircle with a radius of 25 m from the fixed point. Two concentric semicircles represent 50% and 100% response levels and the length of the bold line indicates the percentage of responses at each location tested. She sat on a chair close to and facing the bed, at the focus of the semicircle. The "ashes" of the first and the black cloud of the second are marked by identical black spirals and semicircles and by star markings. The class sat in a semicircle with teachers and helpers playing acoustic instruments familiar to them from the class cupboard. This is achieved by means of a metal sheet inserted between the two semicircles just in the vertical connecting parts. Figure 3 shows an example of a polygonal object whose local freedom angles are shown using dark semicircles. Clearly, a different result is obtained by integrating along a vertical line than along the semicircles shown. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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