凹痕

dì tǎn shang fàng guò dēng de dì fang yǒu gè āo hén

地毯上放过灯的地方有个凹痕。

There was a depression in the carpet where the lamp had stood.

tā men kě yǐ bǎ qì chē dǎng ní bǎn shang de āo hén qiāo píng

他们可以把汽车挡泥板上的凹痕敲平。

They can beat out the dent in the car's wing.

nǐ rú hé jiě shì chē shang de āo hén

你如何解释车上的凹痕？

How do you account for the dent in the car?