英文: He speculate on a rise.
中文: 他在上涨时投机炒作。英文: Those who speculate are called speculators.
中文: 做投机的人称投机户。英文: He began to speculate about the future.
中文: 他开始思索未来。英文: because you can speculate the ending in the beginning.
中文: 因为刚开始看你就能 推断出它的结局.英文: Others speculate that Atlantis and Lemuria co-existed for thousands of years.
中文: 其他的就推测亚特兰蒂斯与利莫里亚共存了数千年。