23. Fossilized remains of Acanthostega, a primitive fish, reveal that even though the animal had rudimentary limbs, it could not walk on land.
棘螈是一种原始鱼类，它的化石遗迹显示，尽管棘螈有基本的四肢，但它却不能在陆地上行走。
youdao
24. They do these things better in primitive life, for there the adolescent boy joins his father in making canoes and going out fishing or hunting.
在原始生活中，他们能够把这些事情做得更好，青春期的男孩和父亲一起做独木舟，出去钓鱼或打猎。
youdao
25. At Case Western Reserve University in Cleveland, Ohio, research scientists have designed a 4-inch silicon chip that holds 700 tiny primitive motors.
在俄亥俄州克利夫兰的凯斯西储大学，研究科学家设计了一种4英寸的硅片，可以容纳700个微型原始马达。
youdao
26. This is not because God created them to poke fun at us; it is because humans and chimps are descended from the same relatively recent primitive ape.
这并不是因为上帝创造它们来嘲笑我们；而是因为人类和黑猩猩都是同一个比较近期的原始猿人的后裔。
youdao
27. Even if Earth's surface were not actually sterilized by this bombardment, it is unlikely that any but the most primitive life-forms could have survived.
即使地球表面并没有被这种轰炸所灭绝，但除了最原始的生命形式之外，几乎不可能有其他生命形式幸存下来。
youdao
28. From these studies, scientists have concluded that the surface of the primitive Earth was covered with oceans containing the molecules fundamental to life.
从这些研究中，科学家们得出结论，海洋覆盖着原始地球的表面，其中含有构成生命的基本分子。
youdao
29. Most of the time, the rational part of the mind controls the information coming from the primitive core and makes its own decisions as to what to do and how to respond.
大多数时候，大脑中的理性部分会控制来自原始内核的信息，并自行决定做什么、如何回应。
youdao
30. In times of emotional turmoil, remember that emotions arise because your senses are wired to the primitive part of your mind which is self-regulated, autonomous and spontaneous.
