求翻译：作为一名中学生应该学会如何表现良好：一要学会守时，不能说脏话；二要会礼貌待人，热心助人；三要遵守交通规则，不乱扔垃圾；四尊敬师长，尊老爱幼。是什么意思？

As one of its secondary school students should learn how to perform well: one should learn to be punctual, can't say bad words; the second to be polite towards others, eager to help others; three to obey, don't litter, and respect the teachers and cherishing.