1. 很少发生地：infrequent 稀少的 | infrequently 很少发生地 | infringe upon 侵害

2.

2. 不经常地;少有：sofa 沙发椅 | infrequently 不经常地;少有 | constitution 体质

3. 不频繁地：photographic: 摄影的,摄制的 | infrequently: 不频繁地 | synthetic: 合成的

4. 稀少地; 珍贵地 (副)：infrequent 稀少的, 罕见的, 珍贵的 (形) | infrequently 稀少地; 珍贵地 (副) | infringe 违犯; 违反; 侵犯; 侵犯; 侵害 (动)

1. not many times

    e.g. in your 1850 church you not infrequently find a dramatic contrast between the sumptuous appointments of the building itself and the inhuman barrack-like living conditions in the church room