1 sentence

1. 当有人在你耳边低语时，那就是30分贝。

   dāng yǒu rén zài nǐ ěr​biān dī​yǔ shí, nà jiù​shì30 fēn​bèi.

   When someone whispers in your ear, that’s 30 decibels.

   Source: CCMatrix