题目内容

[音频]working or continuing in the normal or usual way

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[音频]a possible course of action, etc. so that one can study it before dealing with the real thing

[音频]create a copy of an activity, a situation, etc. so that one can study it before dealing with the real thing

[音频]the time or state when someone or sth. is fully grown or developed

[音频]someone who directs sth. in partnership with another person or other people