universal 2-axis slant bed machine

例句：

1. 1.The universal truth is that success requires hard work and dedication.
   普遍真理是，成功需要努力和奉献。
2. 2.This universal law states that the square of the sum of the roots equals the product of the roots.
   这一普遍定律表明，根的平方之和等于根的乘积。
3. 3. The universal language spoken by humans is not English, but Mandarin Chinese.
   人类所使用的普遍语言不是英语，而是汉语普通话。