1. As the individual matures, that overt talking to oneself becomes covert talking to oneself, but thinking still shows up as a laryngeal habit. 随着个体的成熟，公开的自言自语变成了隐蔽的自言自语，但思考仍然表现为一种喉部习惯。
2. He stole a covert glance at her across the table. 他隔着桌子偷偷地瞥了她一眼。
3. They have been supplying covert military aid to the rebels. 他们一直在为叛军提供隐秘的军事援助。
4. Then he made his deliberations covert. 然后，他进行不公开的审议。
5. Mark Covert doesn't have to think about his run today. 马克·卡维特不需要考虑今天需不需要去跑步。
