1. Wow, you really can recite pi to the thirtieth decimal place. Very impressive, Don! You must have the memory of an elephant. 哇哦，你真的能背到圆周率小数点后三十位。太厉害了，丹！你一定有着大象一样的记忆力。
2. Company employees more than 300 people, mainly engaged in home textiles, hand Hangfeng Pi, bedding, acupuncture cotton, Pen Jiaomian products such as the production and sale. 公司现有员工300多人，主要从事家用纺织品、手工绗缝被、床上用品，针刺棉，喷胶棉等产品的生产及销售。
3. This paper introduced the calculations of pressure index (PI), amendment and decision factors, and particularly described the principle and application method of PI decision technology. 介绍了压力指数（PI）值的计算、修正以及决策因子的计算。着重阐述了PI决策技术的原理和应用方法。
英英解释
n.
1. the ratio of the circumference to the diameter of a circle; approximately equal to 3.141592653589793
2. someone who can be employed as a detective to collect information
3. the scientist in charge of an experiment or research project
4. the 16th letter of the Greek alphabet
5. an antiviral drug used against HIV; interrupts HIV replication by binding and blocking HIV protease;
