5,237,166,234为什么这个数的英语句子之间加逗号啊句子是fivebillion，twohundredandthirty-sevenmillion，onehundredandsixty-sixthousand，twohundredandthirty-four16,250,064sixteenmilliontwohundredandfiftythousand

Question

5,237,166,234 为什么这个数的英语句子之间加逗号啊
句子是five billion，two hundred and thirty-seven million，one hundred and sixty-six thousand，two hundred and thirty-four
16,250,064 sixteen million two hundred and fifty thousand sixty-four为什么这个后面不加,?

Answer 1

逗号可以换成and