求翻译：走进宿舍，舍友说，下午班里要摄影留念，每人准备一分钟的话。在那一分钟里，我该说什么呢？莫如什么也不说，只留一个背影罢。一个从这里出发，渐行渐远，渐渐远去的背是什么意思？

Walk into hostel, care friends said to photographic memento of the class in the afternoon, prepare a minute per person. In a minute, what can I say? Is to say nothing, leaving only one back. A departure from here, fading away, died away in the background