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| NOUN |
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| /ˈsɜːkl/ |
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| 1 | a round shape consisting of a curved line that completely encloses a space and is the same distance from the centre at every point . Something in the shape of a circle is circular 圆；圆形 |
| a mathematical calculation to find out the radius of a circle 计算圆的半径的数学方法 |
| +of Cut out a circle of paper. 用纸剪一个圆圈。 |
| | 1a | a group of people or things arranged in a circle 围成圈的人；排成环状的事物 | | +of a circle of stones 一圈石头 | | in a circle The dancers were standing in a circle around the fire. 跳舞的人们围着篝火站成一圈。 | | form a circle Now I’ d like you to form a circle and hold hands. 现在我要你们围成一圈，拉起手来。 | |
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| 2 | a group of people who know one another or are related to one another （熟悉的、相关的人形成的）圈子 |
| +of They have a large circle of friends and acquaintances. 他们的交友圈范围很广。 |
| a social circle I soon became a member of her social circle. 我很快就成为她社交圈中的一员。 |
| family circle He now felt he was a member of the family circle. 他现在感到自己成了这个家庭圈子中的一员。 |
| | 2a | a group of people who are interested in the same things or have the same profession （因有共同的兴趣、职业而组成的）界，阶层 | | scientific/academic/literary circles He began to move in the scientific circles centred round Sir Charles Cavendish. 他开始进入以查尔斯·卡文迪什爵士为中心的科学界。 | | political/financial/business circles The bank’ s failure sent shock waves through international financial circles. 这家银行的破产在国际金融界引起了震荡。 | |
| PHRASES |
| - | the circle
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| the upper floor of a theatre or cinema |
| （剧场或影院的）楼厅包厢 |
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| We had seats in the circle. 我们在楼厅包厢有座位。 |
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| - | come/go/turn full circle
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| if a situation comes, goes, or turns full circle , it becomes the same again as it was at the beginning |
| 循环；又回到原处 |
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| He’ s back managing the club he first started out in, so his career has come full circle. 他又经营起当初起家的那家俱乐部，因此他的事业兜了个圈子又回到了原处。 |
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| - | go around/round in circles
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| to do something for a long time without achieving any results because you always return to the same problem that you cannot solve |
| 在原地兜圈子；瞎忙；毫无进展 |
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