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- two circle goniometer 双圆测角仪
- There is a small overlap between the two circles. 在这两个圆周有一小部分重叠。
- Once in orbit, two of the THEMIS spacecraft will circle Earth about one-sixth the distance to the moon while the other two circle half way to the moon. 一旦卫星进入轨道，其中的两架太空船将在距离月球1/6处围绕地球旋转，而另外两个则在距离月球一半的位置绕地球旋转。
- The talisman consists of two circles with triangles drawn on them. 这种护身符由两个圆圈组成，圆圈上画有三角。
- The main goal of this paper is to study the density of the two circle packing, in particular, the relevant density problems of the set of incir-cles of the Archimedean tessellation (12, 12, 3). 利用欧式空间中正多边形的(12，12，3)阿基米德铺砌，借助一个新函数t_s，通过对t_s的计算及一系列的证明，我们得到如下结果：
- Cummer asks again: What is the are two circles round thing below that? 女友又问：那下面两个圆圆的东西是什么？
- The line cuts the circle at two points. 一直线与圆相交於两点。
- The two circles on the lower Path of Life are the "great shaking of the earth" (World Wars One and Two). 较低生命道路上的两圆是“巨大的地球摇动”（一次和二次世界大战）。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The two circles are the focal points for ice break-up and may be caused by upwelling of warmer water in the lake. 这两个黑圈位于冰面消融的中心位置，可能是由于温度较高的湖水向上翻涌形成的。
- The business is owned by two partners. 这家商行为两名合伙人所拥有。
- All the students clap hands and sing a song. Two circles move to the opposite direction. （同学们边拍手边唱歌。2个圈分别向相反的方向移动。
- Take two circles and let them overlap a little; the area that overlaps is the conjunction, while the whole area is the disjunction. 取两个圆,并让它们彼此有一些交迭;交迭的区域就是合取,而整个区域就是析取。
- Not scary, but very intense. I can't really remember it exactly. We all danced. There were two circles, one for the girls and one for the boys. 不是特别恐怖。我确实记不清楚了。只记得所有的人都跳舞。女孩组一个圈,男孩组一个圈。
- Monge Theorem : Given three circles, and construct common tangents of two circles mutually. Then three points lies in a straight line. 蒙日定理：给定三圆，则两两圆的外公切线交点在同一直线上(蒙日直线)。
- Here a new interfluent stable power supply was proposed, which consists of two circles of magnetic flux transformer and the automatic control system. 给出一种新型交流稳压电源，由双磁路变压器和自动控制系统组成。
- She has two cars and in addition a motorboat. 她有两辆轿车外加一艘汽艇。
- The two circles lead to the continuity on Microtus fortis calamorums' population amounts and series of complex disastrous behaviours. 另一方面支撑着湖泊水位的涨落交替循环，进而形成了东方田鼠被迫外迁和主动内迁的循环。
- The meat marinated in the brine for two days. 这块肉在盐水里泡了两天。
- Join two boards with nails; joined hands in a circle. 用钉子把两块板钉在一起; 手拉手围成一个圈
