adj.不頻發(fā)的；不常見的

Muggings are relatively infrequent in this area. 在這個(gè)地區(qū)行兇搶劫事件相對(duì)少見。

This year our country produced the infrequent pluvial calamity on the history. 今年我國(guó)發(fā)生了歷史上罕見的洪水災(zāi)害。

Primary abscess of the omentum is an infrequent disease entity. 原發(fā)性大網(wǎng)膜膿瘍是一種罕見的疾病。

adv.罕見地；稀少的