cloak-and-dagger activities are secret and mysterious, sometimes in a way that people think is unnecessary or silly 秘密的，神秘兮兮的（有时被认为不必要或荒谬） Why can’t we be open about it? Do we really need all this cloak-and-dagger stuff? 我们为什么不能对此开放？我们真的需要所有这些斗篷和匕首的东西吗？