circs [sɜ:ks]

例句:

• The ring sum of two circs is a circ.
  两个广义圈的环和是一个广义圈.
  
• Need to treat distimctively for dissimilarty circs about the rural highway's design.
  山区公路的超高设计有必要针对具体的情况区别处理.
  
• Have a good met an emergency and deal with urgency circs'ability.
  有良好的应变和处理紧急情况的能力.
  
• So, to prevent this, I use what we refer to in the knitting business as 'circs - two short needles connected by a long cable.
  来自BBC