基本解释皮西亚斯(公元前三世纪的古希腊航海家、地理学家)同根派生 Pytheas相关词英汉例句Pytheas claimed that Thule was six days north of Britain, and that the midsummer sun never set there.皮西亚斯声称北极之地离英国北部有六天时间的距离，仲夏的太阳从不在那里下山。Pytheas更多例句