lit. to enter by the back door, fig. to gain influence by pull or unofficial channels, back door or under the counter connections

租用或出租

to take an indirect route, to waste one's time by using an inappropriate method

to be at an impasse (idiom), in a tight spot, at the end of one's rope, desperate

阻止或干扰使不能顺利进行或发展

办事不负责或待人不诚恳, 只是表面应付