bundle (someone) up        
phrasal verb with bundle verb uk/ˈbʌn.dəl/ us/ˈbʌn.dəl/
 (使…)穿得暖和
to put warm clothes on yourself or someone else
  The kids were bundled up in coats and scarves. 孩子们穿着大衣,系着围巾,裹得严严实实。 
 
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