单词：Iapetus
土卫八
n. (Greek mythology) the Titan who was father of Atlas and Epimetheus and Prometheus in ancient mythology
词型变化：名词复数形式 : iapetuss
Iapetus的用法和样例：
例句
- What has happened to Saturn's moon Iapetus?究竟土星的卫星土卫八发生了什麽事？
- The discovery offers a possible solution to the mystery of the moon Iapetus.这个发现给土卫八之谜提供了一个可能的解释。