semicircle
semicircle — 名詞
- semicirclesingular
- semicirclesplural
1. a flat shape made by cutting a circle in half along its diameter
半圓
將圓形從中心對半切開的形狀
a flat shape made by cutting a circle in half along its diameter
Andrés drew a large semicircle on the board with a piece of chalk.
Andrés 用粉筆在黑板上畫了一個大的半圓形。
drew + semicircle + on + surface
Adina opened her geometry book and measured the area of the semicircle on page twelve.
Adina 翻開幾何課本，測量第十二頁上半圓形的面積。
measure the area of a semicircle
After the downpour, a rainbow curved in a bright semicircle over the wet playground.
大雨過後，一道彩虹在濕漉漉的操場上方彎成明亮的半圓。
Bilal cut a semicircle out of blue paper and stuck it on the card.
Bilal 從藍色紙上剪下半圓形，貼在卡片上。
The stone arch above the old wooden door was a perfect semicircle.
舊木門上方的石拱是一個完美的半圓。
- half-circle
same meaning; more common in everyday speech, often hyphenated
- hemicycle
formal term used mainly in architecture and design
2. people or objects placed so that they follow the curved outline of a half-circle
圍成半圓
人或物排列成半圓的形狀
people or objects placed so that they follow the curved outline of a half-circle
The children sat in a semicircle on the floor to hear the story.
孩子們在地板上圍成半圓，等著聽故事。
sit in a semicircle
Olivia placed the chairs in a semicircle around the small round table.
Olivia 將椅子在小圓桌周圍擺成半圓形。
place + objects + in a semicircle
A semicircle of market stalls lined the square on festival morning.
節日早晨，半圓形的市集攤位沿著廣場排列著。
The students formed a semicircle in front of the board for the class photo.
學生們在黑板前圍成一個半圓，準備拍班級合照。
Kasia arranged the candles in a semicircle on the birthday cake.
Kasia 把蠟燭在生日蛋糕上排成半圓形。
用法筆記
Subject is usually a group of people or a collection of objects, not a single item.