词汇	惟谷
释义	惟谷 wéi gǔ謂進退兩難。
随便看	square nilpontent matrix squareno square non-residue square nonsingular matrix square non-surplus square normal closed double head wrench square-nose bit square-nosed slug square one Square One by Tom Petty square ones square oneself square one's shoulders square-on reflector square opening Square-opening Niche square opening sieve square-opening sieve square opening single end box wrench Square operator Square optical waveguide square orifice square or rectangular wave AC voltage square ourselves square our shoulders