N-UNCOUNT
（言谈举止的）老练，圆通，得体，乖巧
Tact is the ability to avoid upsetting or offending people by being careful not to say or do things that would hurt their feelings.
例句
On this occasion the press have not been intrusive and they have shown great tact.
媒体此次并没有过多纠缠，表现十分得体。
...helping to smooth over problems with great tact and efficiency.
老练、高效地帮助顺利解决了难题