close to the vest

adv.

用在一般情况下就是指一个人非常小心不让别人知道他在干什么，谨慎小心，保守秘密。，；

Close to the Vest
Close to the vest
Close to the vest
Close to the vest: a novel way to keep airways clear.
Playing It Close to the Vest
Close to the vest. Body armor changes the face of penetrating injuries
We're racing toward NAB 2011, but manufacturers are holding their cards close to the vest
(Secret Weapon): Close To The Vest
USPS Plays It Close to the Vest
Hendry Playing His Sosa Cards Close to the Vest
OMC Plays It Close To the Vest in Ga
Play Your Cards Close to the Vest
E-mail kept close to the vest