政策一旦开了口子,地方执行标准就可能迅速松动。Zhèngcè yídàn kāi le kǒuzi, dìfāng zhíxíng biāozhǔn jiù kěnéng xùnsù sōngdòng.Once a loophole is opened in the policy, local implementation standards may quickly loosen.
手指被纸划了一个小口子,有点疼。Shǒuzhǐ bèi zhǐ huá le yí ge xiǎo kǒuzi, yǒudiǎn téng.A piece of paper cut a small nick in my finger, and it hurts a little.
河堤裂开了一个口子,工人们赶快去修补。Hédī lièkāi le yí ge kǒuzi, gōngrénmen gǎnkuài qù xiūbǔ.A breach opened in the river bank, and workers hurried to repair it.