four简单

“Insects that today are a minor problem may become a major problem if they can produce three or four generations in a year,” says forest ecologist John Stanturf.

森林生态学家约翰·斯坦图夫说：“如今只是小问题的昆虫，如果一年能繁殖三四代，就可能变成大问题。”

The nail hoard was discovered in 1960 in a four-metre-deep pit covered by two metres of gravel.

这批钉子于1960年在一个四米深的坑中被发现，坑上覆盖着两米厚的碎石。

Kung children as young as four will help to look after younger ones and “baby-wearing”, in which infants are carried in slings, is considered the norm.

年仅四岁的昆族儿童就会帮忙照看更小的孩子，而用背带背着婴儿的“背娃”做法被视为常态。

An infant born to a hunter-gatherer society could have more than ten caregivers — this contrasts starkly to nursery settings in the UK where regulations call for a ratio of one carer to four children aged two to three.

出生在狩猎采集社会的婴儿可能有十多位照料者——这与英国的托儿所形成了鲜明对比，英国的规定要求，对于两到三岁的儿童，照料者与儿童的比例为一比四。

One example of how artists and scientists have together rocked the senses came last month when the Sydney Symphony Orchestra performed a reworked version of Antonio Vivaldi’s The Four Seasons.

艺术家和科学家如何共同带来感官震撼的一个例子发生在上个月：悉尼交响乐团演奏了安东尼奥·维瓦尔第《四季》的改编版。

The reworked version of The Four Seasons is mentioned to show that ____

提到《四季》的改编版是为了表明____

Over nearly four months, dozens of men made their way on horseback into Montana and traversed along the Yellowstone River and around Yellowstone Lake.

在近四个月的时间里，数十人骑马进入蒙大拿，沿黄石河、绕黄石湖穿行。

Half of the students in four large philosophy classes read an article on the ethics of factory-farmed meat, optionally watched an 11-minute video on the topic and joined a 50-minute discussion.

在四个大型哲学班中，一半学生阅读了一篇关于工厂化养殖肉类伦理问题的文章，可选择性地观看了一段关于该话题的11分钟视频，并参加了50分钟的讨论。

When a faculty or department grows from, say, five to 20 members within three or four years, (49) and when the new staff are predominantly young men and women fresh from postgraduate study, they largely define the norms of academic life in that faculty.

当一个学院或系在三四年内从比如说5名成员增加到20名，(49) 并且新进员工主要是刚完成研究生学业的年轻男女时，他们在很大程度上决定了该学院学术生活的规范。

In one study, participants completed a battery of eight tasks, including four that tapped reflective thinking (discerning rules, comprehending vocabulary) and four that tapped intuition and creativity (generating new products or figures of speech).

在一项研究中，参与者完成了一组共八项任务，其中四项调用反思性思维（辨别规则、理解词汇），四项调用直觉和创造力（构想新产品或修辞手法）。

In one study, participants completed a battery of eight tasks, including four that tapped reflective thinking (discerning rules, comprehending vocabulary) and four that tapped intuition and creativity (generating new products or figures of speech).

在一项研究中，参与者完成了一组共八项任务，其中四项调用反思性思维（辨别规则、理解词汇），四项调用直觉和创造力（构想新产品或修辞手法）。

“Each year the physical presence rule becomes further removed from economic reality and results in significant revenue losses to the States,” he wrote in an opinion joined by four other justices.

他在一份得到另外四位大法官附议的意见书中写道：“实体存在规则一年比一年更加脱离经济现实，并给各州造成了巨大的收入损失。”