1. Bimetallic: The term "Bi" in English can refer to "Bimetallic," which typically describes objects such as coins or metal sheets made from two different metals. These items are often distinguished by their distinct colors, textures, and sometimes even by their ability to interact with magnetic fields. Bimetallic coins, for example, are designed to combine the properties of two metals to create a coin that is more durable and has a stable value.

2. Biometric: In the context of technology, "Bi" may represent "Biometric," which relates to biometric recognition technology. This technology involves the automated recognition and verification of individuals based on their unique biological and behavioral characteristics. Common biometric modalities include fingerprint scanning, facial recognition, iris detection, and voice recognition. Biometric systems are extensively used in security applications, such as access control, border security, and identity verification.

3. Bilingual: education: The abbreviation "Bi" can also denote "Bilingual" in English, which pertains to bilingual education. In bilingual programs, students receive instruction in two languages, typically their mother tongue and a second language. The aim is to develop proficiency in both languages, enhancing students' communication skills and cognitive abilities. Bilingual education has gained popularity as a means to prepare students for an increasingly globalized world, and it is now offered in many schools and educational institutions worldwide.