假设

我们先假设这个计划是可行的，然后再讨论细节。

Let's first suppose that this plan is feasible and then discuss the details.

假设你有一百万，你会用它来做什么？

Suppose you had one million. What would you do with it?

科学家提出了一种新的假设，但还需要实验证明。

Scientists have proposed a new hypothesis, but it still needs to be tested experimentally.

你的这个假设没有事实根据，大家很难相信。

Your hypothesis has no factual basis, so people find it hard to believe.