covert
US
UK covert adj: (operation: undercover, secret)
SC 秘密的 mì mì de
Neil is a specialist in the military and works on covert operations.
covert n: (hide, shelter)
SC 秘密的 mì mì de
SC 暗地进行的 mì mì de ，àn dì jìn xíng de
The young buck hid in the covert.