"Mayans had a system of writing and an accurate calendar"
《柯林斯英汉双解大词典》
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao
youdao