一定要注意安全，不能掉以轻心！
如果，你寒假出游的话，一定要注意安全！
If you winter vacation travel, must pay attention to safety!
在马路上一定要注意安全！
但你一定要注意安全。
最后也是最重要的一点，请大家一定要注意安全！
Last but most important, SAFETY is the prerequisite for an excursion.
记住，当进行空调系统的作业时，一定要注意安全操作。
Remember, when working with air conditioning systems be aware of safe working practices.
威廉的教父听到婚礼的消息，写信提醒威廉，当他们乘坐飞机时一定要注意安全。
William's godfather said that upon hearing of the wedding he wrote to William to caution him against thinking about Kate too much while he was flying helicopters.
在此，我也希望我的朋友，以后一定要注意安全，生命对每个人来说都只有一次。
At this point, I also hope that my friends, we must pay attention to the future security of every person has only one life.
分手的时候，她说我那么晚还要回大学城一定要注意安全，到了就发个短信给她报平安。
When we set apart, she urged me to be careful again and again for returning to the Mega Center of Higher Education so late and asked me to send her short messages of my safe arrival.
另外，平日里上下学一定要注意安全，要懂得保护自己。最后送一首蔡琴的《我心是海洋》给你们，我们彼此共勉！加油，孩子们！
In additional, becarefully on your way to and from school, protect yourselves, finally, send youa Caiqin's song –"my heart is ocean", come on, my children.
另外，平日里上下学一定要注意安全，要懂得保护自己。最后送一首蔡琴的《我心是海洋》给你们，我们彼此共勉！加油，孩子们！
In additional, becarefully on your way to and from school, protect yourselves, finally, send youa Caiqin's song –"my heart is ocean", come on, my children.
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