N a preliminary written exercise 序言
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。
In this period, we'll learn and practise the prolusion part of a job interview.
这一期我们将一起学习求职面试的开场白部分。
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。
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