今天我们要学的词是active duty。 Active duty, 现役的。星期一是美国阵亡将士纪念日。 "My friend Jack is an active duty Army Captain who has deployed overseas three times," 我朋友杰克是现役陆军上尉，先后三次被派驻海外。 "More than 600 museums will offer free admission to active duty military personnel and their families this summer," 今年夏天六百多家博物馆允许现役军人及其家属免费参观。 "The offer also applies to active duty reservists," 这项优惠同样适用于现职的后备役人员。好的，今天我们学习的词是active duty...