(adj.) not frequent; not occurring regularly or at short intervals; 'infrequent outbursts of temper' .
录入:诺兰
双语例句
For weak and infrequent currents such as are used in the electric bell, only small quantities of zinc are needed, and the expense is small. 伯莎M.克拉克.科学通论.
It was one of those not infrequent days of an English June which are as wet and boisterous as November. 托马斯·哈代.还乡.