speculation

n.

投机买卖；思考；投机活动；推断

复数：speculations

speculation about n. 关于…猜测

1. They have much speculation over the cause of the air crash.
   他们对飞机坠毁原因有多方推测。
2. Speculation has reached such a pitch that a decision will have to be made immediately.
   这种胡乱猜测甚嚣尘上，已经到了必须立即解决的程度了。
3. He makes some unprofitable speculations.
   他在做些无利可图的投机生意。
4. She lose all her money in stock exchange speculation.
   她将所有的钱赔进了股票投机生意。
5. The Big Bang is a kind of speculation or guess rather than a proven fact.
   大爆炸只是一种思索和推测并不是已证明的事实。

Théorie de la Speculation
Computer Speculation, Auctions, and Competitive Sealed Tenders
On the Possibility of Speculation under Rational Expectations
The Theory of Hedging and Speculation in Commodity Futures
The Theory of Hedging and Speculation in Commodity Futures
Insect diversity: facts, fiction and speculation.
Razor:A Low-Power Pipeline Based on Circuit-Level Timing Speculation
Positive Feedback Investment Strategies and Destabilizing Rational Speculation
Repetitive and Non-Repetitive DNA Sequences and a Speculation on the Origins of Evolutionary Novelty
DSSW 1990 JF - Positive Feedback Investment Strategies and Destabilizing Rational Speculation.pdf