Your theory is pure conjecture.

你的理论纯粹是主观臆测。

youdao

Your theory is pure conjecture.

你的⑵理论⑷纯粹⑴是⑵主观⑸[臆测]⑩。

youdao

He didn't know the fact; what he said was pure conjecture.

他并不知道实情，他说的纯属猜测。

youdao

Policy makers base overarching decisions on historical aggregates and pure conjecture programmed into computer models.

FORBES: Economists Aren't As Clever As They Think They Are

His health is perhaps the regime's most closely guarded secret, so all this is pure conjecture.

ECONOMIST: The state the North Korean regime is in

The fact is, most of what you read or hear is pure conjecture, speculation, fantasy or opinion.

FORBES: Unbridled Optimism