知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 IPXIPX 1,26933 gold badges1010 silver badges1919 bronze badges one I must disagree: I believe your introduction of the condition doesn't suggest that you're gonna be introduced to the condition, it only signifies the latter: you are gonna be introducing the problem to Some others. Etymology: sixteenth Century: https://www.ecom-group.com/training-events/sap-cloud-integration-suite-cld900/