再见是用于告别时的礼貌用语，比如你和朋友或家人分别时会说再见。
zài jiàn shì yòng yú bié gé shí de lǐ mào yóu yǔ, rú guǒ nǐ hé péng you huò jiā rén fèn bié shí huì shuō 再见。
再见 is a polite phrase used for saying goodbye. For example, you would say 再见 when parting with friends or family.
再见常用于日常生活中，如上下班、放学回家或结束活动时。
zài jiàn cháng yòng yú rì cháng shēn qíng zhōng, rú xià shàng bān、xié fǎnɡ huí jiā huò jié sù huó dònɡ shí。
再见 is commonly used in daily life situations such as when going to or from work/school, or ending an activity.
A casual, friendly way to say goodbye, borrowed from English.
你好 is a greeting when you meet, 再见 is when you leave.