universal saddle

例句：

1. 1. The universaltruth is that every man is created equal.
   普遍真理是，每个人都是平等的。
2. 2.The universal language of the internet is English.
   互联网的通用语言是英语。
3. 3. The universallaw of gravitation states that everyobject in space attracts every other objectwith a force proportional to their masses.
   万有引力定律表明，空间中每一个物体都以与它们质量成正比的力吸引其他所有物体。