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- She only unbends in the family circle. 她只在家庭环境里才不拘束。
- We are flying at an altitude of 20000 feet. 我们的飞行高度是20000英尺。
- The airliner flew at an altitude of 20000ft. 客机在两万英尺的高度飞行。
- The children formed a circle round her. 孩子们在她周围围成了一个圈。
- We've booked seats in the circle. 我们预订了楼厅包厢的座位。
- At this altitude you often get strong winds. 在这一纬度地区，经常有大风。
- The plane flew at an altitude of30000 feet. 飞机在三万英尺的高空飞行。
- He has a large circle of friends. 他有一大群朋友。
- She moves in a very small circle. 她的活动圈子很小。
- He has a wide circle of acquaintances. 他交游甚广。
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- A square has four sides but a circle has no sides. 正方形有四条边，而圆形没有边。
- Sorry, exercise circle is sold out. 对不起，健身圈卖完了。
- He has only a narrow circle of friends. 他交游不广。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- Some people develop altitude sickness when climbing high mountains. 有些人在爬高山时会发生高山反应。
- This is a device for squaring the circle. 这是一个不可能实现的方案。
- The students sit in a circle on the floor. 学生们在地板上坐成一圈。
- A circle without a center is inconceivable. 一个没有圆心的圆是无法想像的。
- The pilot blacked out for a moment upon reaching such a high altitude. 飞机上升到这样高度时，飞行员昏厥了片刻时间。
