The ratio of the circumference of any circle to its diameter is less than 3 1/7 but greater than 3 10/71.
任何圆的周长与其直径的比率小于3 1/7但大于3 10/71。
"We are all our own prisons, our own jailers."
The plastic industry must evolve or become obsolete. Sustainability is no longer an option—it's a necessity.
人生像一匹马,你不驾驭它,它便驾驭你。
给予越多,收获越多。
无论代价如何,安全必须始终放在第一位。