斟酌损益[ zhēn zhuó sǔn yì ]
⒈ 处理事物斟情酌理,掌握分寸。损:减少。益:增加。例至于斟酌损益,进尽忠言,则攸之、祎、允之任也。——诸葛亮《出师表》英consider the gains and losses;