英语词汇“know which end is up”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	know which end is up
释义	know which end is up短语¹⁴⁴⁹⁷²⁺²语有识别能力；能看出苗头
随便看	positive negative controller positive-negative controller positive negative double selection positive-negative double selection positive-negative double selectionpns positive-negative double selectionPNS positive/negative edge positive-negative examples positive-negative feedback positive-negative flotation process positive-negative index alternant multilayer Positive/negative interrogative sentences positive-negative justification positive negative logic positive-negative logic positive/negative logic Positive-negative method positive/negative-parity states positive-negative-positive positive-negative power supply positive negative pressure breathing positive-negative pressure breathing positive/negative pressure generation positive negative pressure respiration positive-negative pressure respiration