Word: 假设 (jiǎshè) hypothesis; conjecture

假设得很大。

Jiǎshè de hěn dà.

That's a pretty big assumption.

我们有充分的理由论证这个假设。

Wǒmen yǒu chōngfèn de lǐyóu lùnzhèng zhège jiǎshè.

We have sufficient evidence to prove this hypothesis.

这只是个假设。

Zhè zhǐshì gè jiǎshè.

This is just a hypothesis.

这是个假设。

Zhè shì gè jiǎshè.

That's an assumption.