He told me to seek them through secret obelisks.它告诉我可以通过隐匿的方尖塔找到它们.This is the one that never fall among all the obelisks at the Middle Ages.这也是罗马所有方尖碑唯一不曾在中世纪倒下的....

obelisks的音标：...

n.方尖石塔，短剑号，疑问记号( obelisk的名词复数 )...