1、Safety is the prime factor to consider when people choose where to travel.
出行旅游要考慮諸多因素，其中安全是最重要的。

2、A prime factor DFT Algorithm for 840 Complex data is presented in this paper.
本文推導(dǎo)了840點素因數(shù)分解的離散傅里葉交換的算法。

3、The pore structure is the prime factor which will decide the performance of carbon membrane.
炭膜的孔結(jié)構(gòu)是影響炭膜性能的根本性因素。