求翻译：以中间这名同学为基准，向中看齐，立定，稍息。今天我们主要学习了体育舞蹈中的基本姿势，希望同学们下去以后，多加练习，下次课我们学习恰恰舞中的原地换重心技术，立正，这节课结束了，同学们再见！是什么意思？

Intermediate students in line in standing at ease. Today we will learn the basic positions in the sports dance, students who go on to practice more, the next lesson we learn to cha cha in place to change the focus of attention, the end of this lesson, the students goodbye!

Take among this schoolmate as the datum, emulates to, decides, slightly rest.Today we mainly have studied in the sports dance basic posture, after hoped schoolmates get down, practices, next time the class we will study in the dance in-situ to trade the center of gravity technology exactly, will sta

To the basis of his classmates in the Middle, to par, standing, at ease. Today we learned about the basic of sports dance in the position, after hope students, practice more, next time we place for learning ballroom dance center of gravity technology, stand at attention, end of this class, the stude