The use of "roger" as an interjection has its origin in radio communication and military jargon where it is used to acknowledge that a message has been received and understood. In more casual and everyday language, the use of "roger" has extended beyond its original radio communication context. It is sometimes used informally as a way of expressing agreement or acknowledgment in a similar manner to saying "got it" or "acknowledged."

“roger”的英语定义和含义

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