1.Teachers are the backbone of our country.

老师可我们国家的支柱。

2.The health-care division will continue to be the backbone of modern hospitals.

医疗健康部分将为现代医院的支柱。

3.The first animals to develop a backbone were fishes.

第一种进化出脊椎的动物鱼类。

4.Amazon's cloud-computing division, which provides the backbone of its profits, did well.

为亚马逊利润支柱的云计算部门表现良好。

5.Young people today will be the backbone in realizing the second Centenary Goal.

今天的年青人实现第二个百年奋斗目标的骨干和栋梁。

6.Tribes and societies have been the backbone of our survival.

部落和社一直我们生存的支柱。

7.The plans may form the backbone of a presidential reelection bid.

这些计划可能成为总统连任竞选的支柱。

8.Snakes are also vertebrates, which means that they have a backbone.

蛇类也脊椎动物，说明它们有脊椎骨。

9.When this is done, he has the backbone for his dam.

当这一切完成后，他就有了建造水坝的支柱。

10.Not philosophers but fretsawyers and stamp collectors compose the backbone of society.

因为形成社脊梁的并学家，而细木工和玩集邮的人。

11.You've always been the backbone, and I appreciate you so, so much.

你一直我们的顶梁柱，我非常感谢你。

12.But the oyster has no backbone; indeed it has no bones at all.

但牡蛎没有脊椎骨, 其实, 牡蛎连一点儿骨头都没有。

13.The frog has no tail; and although it has a backbone, it has no ribs.

青蛙没有尾巴；虽然长有脊柱但却没有肋骨。

14.Tourism draws divers to this coral reef which forms the backbone of the economy into hub.

旅游业将潜水员吸引到这片充满珊瑚礁的地方，使其成为了这里的经济支柱。

15.That means they do not have backbones.

那就意味着它们没有脊椎。

16.The second reason I'm running is to restore the backbone of this country, the middle class.

我参加竞选的第二个原因要这个国家的脊梁，中产阶级。

17.The researchers compared more than 20 fossil backbones to skeletons of living snakes to estimate size.

研究人员将 20 多个骨架化石与活蛇的骨架进行了比较，以估计其大小。

18.Let's start with the backbone of the problem, literally.

让我们从这问题的「中枢」开始来讲。

19.A PTFE chain has a backbone of carbon atoms, each of which is attached to two fluorines.

一个PTFE链有碳原子的主链，每一个碳原子还连接两个氟原子。

20.Volcanoes form the backbone of the longest mountain chain on our planet, the Andes of South America.

火山构成了地球上最长山系的主干，南美洲的安第斯山脉。