n.投机买卖( speculation的名词复数 );思考;投机活动;推断;
例句:
A: There are a lot of speculations concerning this issue.
答: 现在围绕这个问题有各种各样的说法.
Speculations about the speech filled the press and radio.
报纸和广播中充满了对这次演说的推测.
Such speculations no longer belong to the realm of science.
这些推测已超出了科学的范畴.