The phrase "be at home" has been in use for centuries and its exact origin is difficult to trace. It is a common expression that likely emerged from the basic concept of feeling comfortable and at ease within one's own home. This expression can be used in a figurative sense to indicate a sense of comfort and familiarity in a particular place, situation, or activity. It can also be used to express a sense of belonging or alignment with a particular group or community.

英語での「 be at home」の定義と意味

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