card up one's sleeve|card|sleeve 成语
card up one's sleeve|card|sleeve
n. phr., informal Another help, plan, or argument kept back and produced if needed; another way to do something. John knew his mother would lend him money if necessary, but he kept that card up his sleeve. Bill always has a card up his sleeve, so when his first plan failed he tried another.
Compare: ACE IN THE HOLE2.card up one's sleeve|card|sleeve
n. phr., informal Addition help, plan, or altercation kept aback and produced if needed; addition way to do something. John knew his mother would accommodate him money if necessary, but he kept that agenda up his sleeve. Bill consistently has a agenda up his sleeve, so back his aboriginal plan bootless he approved another.
Compare: ACE IN THE HOLE2. Dictionary