Sunday best
US /ˈsʌn.deɪ best/
UK /ˈsʌn.deɪ best/

1.
最好的衣服, 礼服
one's best clothes, worn for a special occasion or to church
:
•
She always wears her Sunday best when she goes to church.
她去教堂时总是穿她最好的衣服。
•
He was dressed in his Sunday best for the wedding.
他穿着他最好的衣服参加婚礼。