n.预演；序幕；序乐；开场白
If prolusion is improved and streamline is not, then a swimmer will go faster. 如果推进力改善而流线型没有改善，那游泳运动员会游的更快。
Also to have independent thrusting from the main forward prolusion engine mounted in the rear of the VERT-LEV. 也有独立于主发动机向前冲式预演在垂直后方轻型电动车。
Propellant tank and high pressure vessel are important component of satellite prolusion system. 推进剂贮箱、高压气瓶(简称贮箱、气瓶)是卫星推进分系统的重要核心部件。
Just 7 o'clock, the general assembly of MSTC in Shangdong University undrew its purdah in due form after compere Wang Yongxin 's prolusion. 期待以久的神秘即将揭开。7点的钟声刚过，伴随着主持人王勇新的开场白，山东大学微软学生俱乐部会员大会正式拉开帷幕。
Just 7 o'clock,the general assembly of MS club in Shangdong University undrawed its purdah in due form after compere Wang Yongxin 's prolusion. 期待以久的神秘即将揭开。7点的钟声刚过，伴随着主持人王勇新的开场白，山东大学微软学生俱乐部会员大会正式拉开帷幕。
And It Was So prolusion: Ladies and gentlemen, do you believe in God? Today we are going to tell a story about the Goddess. 故事序言：女士们先生们，你们相信神仙吗？今天，我们就来讲述一个关于神仙的故事。
