technique is a trade secret. When talking about your job, we expect you to use ( ). That goes for your wife too; we expect her to use her better judgment when asked.
discretion n. 自行决定权，判断力；谨慎，慎重；
use discretion谨慎，谨慎行事
句意：我们的技术是商业秘密。当你谈及你的工作时，一定要谨慎小心。这一点对你妻子来说也一样，我们希望在她被问到的时候能够更加慎重地做出判...