infrequently ad珍贵地
sketch infrequently罕见地密谋
attack infrequently罕见地攻击
promote infrequently罕见地提升
plot infrequently罕见地密谋
betray infrequently罕见地流露
earthquake infrequently罕遇地震
Although Infrequently虽然不很频繁
sew infrequently罕见地缝制
"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"