这种三段论推理在逻辑课上很常见：所有鸟都会飞；企鹅是鸟；因此企鹅会飞。

This type of ___syllogism is common in logic class: All birds can fly; penguins are birds; therefore penguins can fly.

哲学家经常使用三段论来展示严密的逻辑推理。

Philosophers often use ___syllogisms to demonstrate rigorous logical reasoning.

广告中的那些逻辑推论乍听起来合理，但仔细分析就会发现漏洞百出。

The ___syllogisms in the advertisement sound plausible at first, but fall apart under scrutiny.