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    clam up

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    clam up

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++clam up  → clam up at clam2(1) to suddenly stop talking, especially when you are nervous or shy
    clam up


    clam up
    clam up phrasal verb (see also clam)
    informal to suddenly stop talking, especially when you are nervous or shy:
        A sensitive child is likely just to clam up.