第15课：刻薄的 - 13
【迷你小对话】
A: Attila the Hun was a merciless ruler who invaded many countries. B: I heard he showed his people no mercy and had many executed.
A: 匈奴王Attila是个残暴的统治者，他侵略了很多国家。 B: 我听说过他对他的臣民也不仁慈，处死了很多人。
