conjecture

推测、猜测、揣测正式

Without solid data, his report is pure conjecture.

缺乏确切的数据，他的报告纯属推测。

猜想数学

Mathematicians spent decades trying to prove the conjecture.

数学家花了数十年试图证明这个猜想。

推测、猜想正式

Researchers conjecture that the virus spread through contaminated water.

研究人员推测这种病毒是透过受污染的水传播的。