infrequent
adj. 稀少的; 罕見的
If something is infrequent, it does not happen often.
...John's infrequent visits to London.
約翰僅有的幾次倫敦之行
1. not frequent; not occurring regularly or at short intervals;
Do you something that is short and infrequent?
你希望專案是短期並且不頻密的 嗎 ?
If written work is incomplete or attendance is infrequent, you will not pass the course.
如果沒有完成書面報告或者出席率不高, 你將無法及格.
Polycystic ovary syndrome: Endocrine disorder in women, characterized by high androgen levels and infrequent or absent ovulation.
多囊卵巢症候群: 婦女內分泌疾病, 因雄激素過高而阻礙了排卵.
Barriers between nations are reared by slow and infrequent communication.
國與國之間的隔閡是由溝通緩慢而又太少形成的.
Disturbances are relatively infrequent in British prisons.
相對來說,英國監獄不常發生騷亂.