shì qing / míng míng / bú shì / wǒ de / cuò / wǒ / què / méi néng / dāng chǎng / jiě shì / xīn lǐ / jué de / tè bié / wō nang

事情明明不是我的错，我却没能当场解释，心里觉得特别窝囊。

It clearly was not my fault, but I could not explain myself on the spot, so I felt extremely frustrated and helpless.