infrequent
例子
The infrequent bus service made it difficult to commute.
不频繁的公交服务使得通勤变得困难。
例子
Earthquakes are infrequent in this region, but when they happen, they can be devastating.
这个地区地震很少见，但一旦发生，可能是毁灭性的。
例子
Infrequent houses lined the lonely road, separated by long stretches of open land.
稀疏的房屋排列在孤寂的道路两旁，被长长的开阔地带隔开。
