infrequent pulse稀脉;慢脉
infrequent a稀少的
infrequent relapses不常发
infrequent t很少发生的;稀有的
infrequent item非正常项目
Infrequent Vacations不经常休假
infrequent gas罕见气体
Not Infrequent并不罕见
infrequent menstruation月经稀少;翻译
ADJ（形容词） If something is infrequent, it does not happen often. 很少发生的 [usu ADV with v, also ADV with cl/group]
...John's infrequent visits to Topeka.
...约翰对托皮卡很少的几次拜访。
ADV（副词） infrequently
The bridge is used infrequently.
这座桥很少有人用。