稀少地,珍贵地;
Scientists suspect that this slow rate explains why eruptions occur infrequently in the area.
科学家们认为,这样慢的速度可以解释为什么在这一地区火山喷发并不频繁.
来源:辞典例句The potential complications of varicocele repair occur infrequently and are usually mild.
精索静脉曲张手术并发症不常见,通常很轻微.
来源:互联网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.
来源:辞典例句I saw him not infrequently during the difficult years he spent in Paris.
在他落魄巴黎的一段坎坷困顿的日子里,我经常和他见面.
来源:辞典例句Waterspouts and hailstorms occur infrequently , while snow and tornadoes are rare.
水龙卷和冰雹偶有出现, 降雪和陆龙卷则属罕见.
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