Luck is in a red hat today.
= Luck (has on) a red hat today.
= Luck (dresses in) a red hat today.
注:be in...= have...on,意思是“穿着”.
Luck is in a red hat today.
= Luck (has on) a red hat today.
= Luck (dresses in) a red hat today.
注:be in...= have...on,意思是“穿着”.