It is simple pleasures, such as a walk on a sunny day, which have a cumulative effect on our mood.
诸如在晴朗的日子散步这样简朴的乐趣对我们的情绪有累积性益处。
Scientists claim to have identified chemicals produced by certain plants which have powerful cancer-fighting properties.
科学家们声称已经发现某些植物产生的化学物质有强大的抗癌功能。
A country's capacity to produce wealth depends upon many factors, most of which have an effect on one another.
一个国家创造财富的能力取决于许多因素，其中大多数因素相互影响。
They even say that large wild animals which have not lived in the UK should be helped to return and live wild.
他们甚至说应该帮助那些没有在英国生活过的大型野生动物回归野外生活。
It holds six language families, two of which have only one remaining language, and almost all of the languages here are endangered.
它有六个语系，其中两个只剩下一种语言，几乎这里所有的语言都濒临灭绝。
Elephants, which have no predators, must roam widely to get their daily ration of about 300 kilograms (660 pounds) of grass, leaves, and twig.
没有天敌的大象必须在广袤的大地上四处漫游，才能获得每日约300公斤（合660磅）的草、树叶及树的口粮。
Private courier companies, which have more dollars to spend, use their expertise in logistics to help revitalize damaged areas after a disaster.
私人快递公司可支配的资金更多，它们利用自身在物流方面的专业技术来助力灾区的重振。
Mass market paperbacks, which have been declining for years anyway, will probably disappear, as will hardbacks for mysteries, thrillers, "romance fiction," etc.
无论如何，大众市场的平装书已经衰落多年，且可能会消失，就像神秘小说、惊悚小说、“浪漫小说”等的精装书一样。
This all amounts to heightened activity and noise levels, which have the potential to be particularly serious for children experiencing auditory function deficit.
所有这一切都意味着活动量和噪音水平增加，这对有听觉功能缺陷的儿童来说有更加严重的潜在影响。
Adams took a succession of jobs which have stood him in good stead.
亚当斯做了一连串对他很有利的工作。
Wheat is grown in places which have cold winters and warm, dry summers.
小麦生长在冬季寒冷、夏季温暖干燥的地方。
Some of it has to do with recent stage musicals, which have been very, very stylized.
其中的一些与最近的舞台音乐剧有关，是极度非写实的。
My grandparents like stories which have happy endings.
我的爷爷奶奶喜欢结局美满的故事。
Gather some leaves which have an interesting texture and shape.
采集一些带有有趣的纹理和形状的叶子。
Items which have still not sold after several sales are destroyed.
多次销售之后仍未售出的物品将被销毁。
China is one of the countries which have the largest number of rivers.
中国是世界上河流最多的国家之一。
There are at least two classes of these receptors, which have been designated A1 and A2.
这些受体至少有两类，分别被命名为A1和A2。
In front of the two trees which have been destroyed in the typhoon sit a group of young kids.
被台风摧毁的两棵树前面，坐着一群小孩。
How many kinds of animals are mentioned in the news story which have been reintroduced to the wild?
新闻报道中提到了多少种动物已经被重新放归野外？
There are some buildings which have historical significance to the locals or to the wider community.
有些建筑对当地人或更广泛的社区具有历史意义。
The combustion of larger molecules, which have multiple carbon-carbon bonds, involves a more complex series of reactions.
具有多重碳-碳键的大分子的燃烧涉及到一系列更复杂的反应。
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