obelisk的复数形式怎么写？

The obelisk was built in memory of those who died for their country.这座方尖塔是为了纪念那些为祖国献身的人而建造的。The shadow of the obelisk spanned the terrance.方尖塔的影子落在平台上.A picture taken before the obelisk far away, beyond the great canyon....

n.方尖石塔，短剑号，疑问记号...

obelisk的音标：obelisk的英式发音音标为：['ɒbəlɪsk]obelisk的美式发音音标为：['ɑbəlɪsk]...