老师用一个通俗的比喻，让大家一下子就明白了。

Lǎoshī yòng yí gè tōngsú de bǐyù, ràng dàjiā yíxiàzi jiù míngbai le.

The teacher used a simple metaphor that made everyone understand immediately.

这场讲座内容通俗易懂，很适合初学者。

Zhè chǎng jiǎngzuò nèiróng tōngsú yìdǒng, hěn shìhé chūxuézhě.

The content of this lecture is simple and easy to understand, very suitable for beginners.