adv.稀少地,珍贵地
When we are isolated and poor, we are not infrequently forgotten.
当我们一贫如洗, 离群索居的时候,往往是没人想到我们的.
Eat cured or smoked meats infrequently.
不要常吃腌制或熏烤的肉.
The bridge is used infrequently.
那座桥少有人过。