Circadian rhythms show persistent, stable periodicities of about 24 hours.

The regulation of energy by the body's circadian rhythms may play a significant role.

受身体昼夜节律对能量消耗规律的影响起着很重要的作用.

These so-called circadian rhythms affect allergy and asthma, too.

这 所谓 的睡眠节律也会影响过敏和气喘.

Online Circassian dictionaries and language courses are emerging.

在线切尔克斯语词典及语言课程也开始兴起.

Circe metamorphosed men into swine.

女妖锡西把人变成了猪.

Are the pillar circinal or quadrate?

柱子是圆的还是方的?

He used a rope to mark off the circle.

他用绳子把那个圈围了起来。

The children gather round in a circle.

孩子们围成了一圈.

All the buildings have names and form a half circle.

所有的建筑都有名称，连在一起构成了一个半圆。

Riddick's first move was to form a quality circle.

里迪克的第一项举措就是成立质量研讨小组。

The Home Secretary aims to break the vicious circle between disadvantage and crime.

内政大臣力图打破贫困和犯罪之间的恶性循环。

She only unbends in the family circle.

她只在家庭环境里才不拘束.

The line cuts the circle at two points.

一条直线与圆相交于两点.

She suddenly raised her arms and spun, so the dress's full skirt fanned out in a bright circle.

她突然举起双臂旋转起来，连衣裙的裙身呈圆形完全展开，明艳照人。

The children had a dance in a circle.

孩子们围成一圈跳舞.

Our main force was ordered to circle around and attack the enemy's rear.

我军主力奉命迂回,然后从背后袭击敌人.

They had just had enough time to swim out of danger when the boat again completed a circle.

他们刚游出危险区,这时快艇又完成了一圈的运动.

The circle has a diameter of 6 inches.

这个圆直径六英寸.

Exercise creates its own virtuous circle. Once you start a programme and do it regularly, you'll feel so good you'll want to continue.

锻炼身体能够形成一种良性循环。一旦你开始一项锻炼计划并持之以恒，你会感觉良好并坚持下去。

The more pesticides are used, the more resistant the insects become so the more pesticides have to be used. It's a vicious circle.

杀虫剂用得越多，昆虫的抗药力就变得越强，于是又要用更多的杀虫剂。这是一个恶性循环。

"Nirvana" squared the circle by making a record that was both superb pop and rock music at the same time.

“涅磐”乐队做到了不可能做到的事，录制了一张既有流行风又带有摇滚范儿的唱片。