“凹痕”的拼音为：āo hén...

那些车辆一律都很破旧，锈迹斑斑，布满凹痕。The vehicles are without exception old, rusty and dented.他把金属板上的一些凹痕敲掉了.He hammered out the dents in the metal sheet.地毯上放过落地灯的地方有个凹痕.There was a depression in the carpet where the lamp had stood....

“凹痕”的英语可以翻译为：indenture，pitting，pit，doke，dent ...