| 1. | Mrnas could cross the chloroplast envelope in vivo .
在体内mRNA能穿过叶绿体外膜。 |
| 2. | A nerve cell, for example, rapidly transmits electrical signals in the body .
例如，神经细胞在体内能迅速传递电信号。 |
| 3. | The short detention time is aggravated by improper chewing of food .
由于咀嚼食物不适当，食物在体内停留的时间变得更短了。 |
| 4. | The induction of a tumor by a virus in vivo can be reproduced in tissue cultures .
病毒在体内诱发肿瘤可以在组织培养中再现。 |
| 5. | Scientists had long thought that no animal could manufacture magnetite .
长期以来科学家们一直认为没有动物可在体内合成磁性物质。 |
| 6. | Their excellent survival during autolysis in vitro and ischaemia in vivo is consistent with this .
与此一致是，在体外自溶时和在体内局部贫血时，它们出色地幸存下来。 |
| 7. | To implant a pacemaker anywhere in the body is to ask the tissues to carry an extra and unnatural weight .
在体内某处安放心博器就是要身体组织承担一个额外的非身体自身的重量。 |
| 8. | Skin, aside from its obvious role in protection, serves some important functions in regulation of body water .
皮肤除了它的明显的保护作用外，还在体内水的调节中起着某些重要作用。 |
| 9. | The researchers related these changes to the heart muscle's greater need for oxygen when alcohol is in the body .
研究人员认为，这些改变是与在体内有酒时，心肌对氧的需要增大有关。 |
| 10. | The major effects of propranolol on the heart are absent in animals in which norepinephrine stores have depleted .
在体内去甲肾上腺素储存已经耗尽的动物，心得安对心脏的主要作用则不出现。 |
