Spelunk
v. 洞穴探险, 洞穴研究
🗣️ 情景例句
Read it, Robbie.
读出来，Robbie。
He has majored in biology.
他专供生物学。
From the shore line, out to a distance which may be anywhere from a few miles to a few hundred miles,
从海岸线向大海延伸几英里到几百英里的区域是大陆架慢坡，