每1000个新生儿中,只有四对同卵双胞胎.
文中单词拼错了,是four pairs
out of every 1000 briths,there are only four paris of identical twins 翻译.
out of every 1000 briths,there are only four paris of identical twins 翻译.
英语人气:319 ℃时间:2019-10-17 07:20:44
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