If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓, 你应称呼他为 'ma'am' 或 'sir' 。
When the archaeologists reconstructed the fragments, they were amazed to find that the goddess turned out to be a very modern-looking woman.
考古工作者把这些碎片重新拼装起来后,惊奇地发现那位女神原来是一位相貌十分摩登的女郎。