1. They tacitly agreed to keep their plan a secret.(他们心照不宣地商定保守他们的计划。)
2. By staying silent, she tacitly admitted that she was at fault.(通过保持沉默,她默许地承认了自己的错误。)
3. His refusal to answer the question was tacitly understood as a sign of guilt.(他拒绝回答这个问题,默许地被理解为有罪的迹象。)