To find reliable answers to questions about something as infrequent as brain cancer, a whole country's worth of data is needed.

要给脑癌这样罕见的疾病找到可靠结论就需要整个国家的统计数据。

youdao

He moved on, aimlessly, and in a little while the houses thinned, and the passers-by were infrequent.

他漫无目的地继续往前走，没过多久，房屋渐渐变得稀少，过路的人也不多了。

youdao

In temple precincts, small sculptures of dragons spouting water into a basin are not an infrequent sight.

在寺庙专用区，水流到某一流域的龙的小雕塑不能说是一种罕见的景观。

youdao

Might not earthquakes simply be too expensive, and too mercifully infrequent, a problem to be worth poor countries doing very much about?

ECONOMIST: The Kashmir earthquake

The roads were empty except for a black Mercedes that would whiz by once or twice a day and an equally infrequent Bedouin on a camel.

WSJ: Magic-Carpet-Ride Chermoula

Elections are infrequent and, as a previous brief in this series noted, political parties can be vague about their governing intentions.

ECONOMIST: POLITICS BRIEF