Some of the issues that unions are promoting, such as human rights and environmental quality, are unassailable. When they try to connect these issues with trade, however, their motives become questionable.
工会所促进得某些问题，例如人权和环境质量是无可非议的。但是，当它们企图把这些问题与贸易挂钩的时候，它们的动机就变得可疑了。