离开教室时，我们永远不要忘记关灯。
We should never forget to turn off the lights when we leave the classrooms.
而且，让我们永远不要忘记在历史上我们两国人民为了共同的进步而共同努力。
Let's also never forget that throughout our history our people have worked together for mutual progress.
狗等它的主人等了一辈子，这一忠诚的行为告诉我们永远不要忘记任何你所爱的人人——忠诚的意义。
The dog has waited for his owner for a lifetime and hid loyal behavior has taught us never forget anyone we loved-the meaning of loyalty.
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