SSS 2010-02-12
时间：2019-01-08 作者：英语课 分类：Scientific American(二)月
It’s good to keep on your toes. Metaphorically 1, that is. Not when you’re actually out for a stroll. Because a new study suggests that it takes nearly twice as much energy to walk on your toes than it does to land on your heel.
Humans are among a small handful of animals that tend to strut 2 heel-to-toe. Chimps 3 and other apes do it, as do bears. But most critters bounce on the balls of their feet—think cats and dogs—while others trot 4 on their toes, like horses and deer.
To find out whether our gait gives us any advantages, scientists asked 27 volunteers to walk on a treadmill 5 all three ways: heel-first, ball-of-the-foot first, or up on tippy toes. The participants also wore face masks that enabled the researchers to measure their oxygen consumption. The results: the subjects walking on the balls of their feet, in addition to looking ridiculous, expended 6 50 percent more energy. The ones prancing 7 on their toes needed 83 percent more energy. The study is in the Journal of Experimental Biology.
The bottom line: landing on our heels provides more leverage 8 and limits energy losses to the ground. And does not look like a tribute to classic Monty Python.
- It is context and convention that determine whether a term will be interpreted literally or metaphorically. 对一个词的理解是按字面意思还是隐喻的意思要视乎上下文和习惯。
- Metaphorically it implied a sort of admirable energy. 从比喻来讲，它含有一种令人赞许的能量的意思。
- The circulation economy development needs the green science and technology innovation as the strut.循环经济的发展需要绿色科技创新生态化作为支撑。
- Now we'll strut arm and arm.这会儿咱们可以手挽着手儿，高视阔步地走了。
- Chimps are too scarce, and too nearly human, to be routinely slaughtered for spare parts. 黑猩猩又太少，也太接近于人类，不可以作为人器官备用件说杀就杀。 来自英汉非文学 - 生命科学 - 医学的第四次革命
- And as nonprimates, they provoke fewer ethical and safety-related concerns than chimps or baboons. 而且作为非灵长类，就不会产生像用黑猩猩或狒狒那样的伦理和安全方面的顾虑。 来自英汉非文学 - 生命科学 - 医学的第四次革命
- They passed me at a trot.他们从我身边快步走过。
- The horse broke into a brisk trot.马突然快步小跑起来。
- The treadmill has a heart rate monitor.跑步机上有个脉搏监视器。
- Drugs remove man from the treadmill of routine.药物可以使人摆脱日常单调的工作带来的疲劳。
- She expended all her efforts on the care of home and children. 她把所有精力都花在料理家务和照顾孩子上。
- The enemy had expended all their ammunition. 敌人已耗尽所有的弹药。 来自《简明英汉词典》
- The lead singer was prancing around with the microphone. 首席歌手手执麦克风，神气地走来走去。
- The King lifted Gretel on to his prancing horse and they rode to his palace. 国王把格雷特尔扶上腾跃着的马，他们骑马向天宫走去。 来自辞典例句