The custom come into being 300 years ago ,come用什么时态

The custom come into being long ago.翻译,秒采 用come into being造句 come into being 和come into effect 有什么区别 how did the earth come into being? years ago和over the years用什么时态 come into being是不是及物动词 英语翻译用上 come into being How did the Statue of Liberty come into being? come into the kitchen什么意思 /come into being造个句子, come into being和exist的区别 come into being 的意思是什么?