up one's sleeve片语

片语

1. 1

   暗中准备、另有妙计、留有一手

   She lost the first round, but she still had a plan up her sleeve.

   她第一轮输了，但心里还藏著一套计划。

2. 2

   王牌、秘密武器

   The team kept one talented striker as an ace up their sleeve.

   球队把一名出色的前锋留作王牌。