求翻译：在这个星期六上午，我校在学校礼堂即将举行一场关于文明校园，我的责任的演讲活动，参加演讲的人必须是各年级演讲前两名的获得者，到时候全校师生都会出席，演讲的主题内容有：1.不乱扔废弃物，保持校园清洁。2.爱护花草树木，让校园充满绿色。3.不追逐打闹，保持文明举止。4.关爱他人，让校园充满爱。是什么意思？

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In the morning, I am Saturday school will be held in the school auditorium on campus, I am of the civilization of his responsibility, the person must attend the lecture grade is the one of the first two lectures of the school's teachers and students when that time comes, and winners will be present,

In this Saturday morning, my school soon holds in the school assembly hall about the civilized campus, my responsibility lecture activity, participates in the lecture the human must be before various grades lecture two winners, when the time comes the entire school teachers and students can attend,

On this Saturday morning, our school to be held in the school Hall about civilized campus, my responsibility of speaking engagements, attend the lecture must be a speech the top two winners in each grade, and teachers and students will be attending, speech topics are: 1. do not throw waste, keeping