望尘莫及 (wàng chén mò jí) | Meaning: lit. to see only the other rider's dust and have no hope of catching up (idiom) | Chinese Idiom with Pinyin & Origin

lag far behind · unable to catch up with · far beyond one's reach · out of (or above) one's reach不可企及bù kě qǐ jí

fall far behind · stare helplessly at the vanishing back of the runner ahead · despair of catching up · be left staring far behind瞠乎其后chēng hū qí hòu

impassable · insurmountable · insuperable不可逾越bù kě yú yuè

lit. to see only the other rider's dust and have no hope of catching up (idiom) · to be far inferior