A pair or two of something, typically used to refer to a romantic partnership.

A couple can also refer to two individuals who are connected or paired for a specific purpose, not necessarily romantically.

एक जोड़ी (किसी विशेष उद्देश्य के लिए जुड़े दो व्यक्ति)

English Usage: The scientists studied the astatic couple in their experiment.

Hindi Usage: वैज्ञानिकों ने अपने प्रयोग में स्थिर जोड़ी का अध्ययन किया।