Data collection is meagre and infrequent.

因为这些数据收集得很少，开展频率也很低。

But when we do have a heat wave, we make the most of it by going outside, sunbathing, and enjoying the very infrequent hot weather.

过当我们真的有热浪来袭时，我们就会充分，到户外、做做日光浴，然后享受这非难得的炎热天气。

This could be very infrequent. In the past, for example.

这可能非少，比如过的运动。

Solar eclipses are relatively infrequent, occurring two to five times a year.

日食发生的频率相对较低，每年发生 2 到 5 次。

People complained that buses were late and infrequent.

人们抱怨公共汽车晚点且频繁。

More than 60% of Central Asia has a dry climate with infrequent rainfall.

超过60%的中亚地区气候干燥，降雨量小。

Live sessions are infrequent and are often scheduled during the middle of the day when students have to attend other classes or work.

直播课程很少，通安排在学生必须加其他课程或工作的中午。

He had untiring energy for the dancing and parties she loved and an unending supply of coarse stories with which he regaled her on their infrequent evenings alone when the table was cleared and brandy and coffee before them.

他有完的精力来加她举行的舞会和宴会。偶尔晚上就他俩，吃完了饭，面前摆着白兰地和咖啡，他有许多登大雅之堂的故事讲给她听，给她解闷。

But as we've seen, they're very infrequent and there are other things in the heavens and on the Earth that are much more dangerous.

但是就象我们看到的那样，它们非罕见，天空里和地球上还有其它要危险的多得多的东西。

Families, elderly passengers, and infrequent travelers may need more assistance and are more inclined to use the counters rather than the kiosks.

家庭客、老年乘客以及行的客可能需要更多帮助，他们倾向于使柜台而非自助终端。

In all likelihood, many people would be crushed by the levels of loneliness within societies in which human-to-human contact is so infrequent.

很有可能，在人与人接触如此罕见的社会中，许多人会被这种孤独程度压垮。

Same goes for the even more infrequent references to breast pumps, the modern appliance that lets a breastfeeding mom go back to work.

同样地，也更少会提到吸奶器，这是一种让母乳喂养的母亲重返工作岗位的现代设备。

Any imagined or real spike from royal weddings is so brief and infrequent as to make no difference to British prosperity.

王室婚礼带来的提振，无论是想象的也好真实的也好，都太过短暂、太过偶然，对英国的繁荣起了什么作。

As a result, full-force assaults were infrequent, although they could occur when the attackers had sufficient resources, men, and siege engines.

因此，即使当攻击方有足够的资源、人员和攻城设备时，全面进攻可能会发生，但并见。

It was one of those not infrequent days of an English June which are as wet and boisterous as November.

这种天气在英国的六月里并少见，就跟十一月份那种潮湿恶劣的天气一样。

The men rode and ran by turn, and the dogs were kept on the jump, with but infrequent stoppages.

那两个人轮流驾橇和跑路, 狗队则一直在奔跑, 有时停脚歇一会儿。

If I say something happens " once in a blue moon, " it is uncommon, infrequent, rare.

如果我说某件事" once in a blue moon" ，那它就是见的，很少发生的，罕见的。

It's a high poverty community, low graduation rates, high crime, infrequent opportunities for science or nature access.

这个非贫困的地区有着极低的就业率、很高的犯罪率、因此对科学及自然的追求自然十分贫乏。

Solitaire, the most played game in the world, sets up the infrequent win as a clear reward.

单人纸牌是世界上玩得最多的游戏，它把这场罕见的胜作为一种明确的奖励。

Errors in the reporting of such infrequent crimes have a huge effect on the headline figure.

这些犯罪发生几率大，相关报道中出现的错误会极大地影响到最后公布到新闻媒体上的数字。