They can't feel and respond to physical contact.

他们对身体接触没有感觉和反应。

The brain seems to respond to how the teeth simply touch together and then signals to tense or relax certain muscles to shift the body's balance in response.

大脑似乎会对牙齿的接触做出反应，然后发出信号，让某些肌肉紧张或放松，从而改变身体的平衡。

The company that owns the building, said the containers were full of acid and infectant, which they think came into contact with rain water causing a reaction.

拥有这座仓库的公司称里满了酸性物和染物，他们认为这些物水接触后产生反应。

However, dogs exude a sense of warmness to other dogs and humans, unlike the wolf's reaction to others.

但是狗狗对其他狗跟人的态度是温暖、亲近的，不像狼跟其他动物接触时的反应。

Your reaction and exposure to these events shaped your brain circuitry.

你对这些事件的反应和接触塑造了你的大脑回路。

It was partly, he decided, the reaction of a healthy body to the contact with disease, and it was partly the tall grim Belsen chimney with its plume of innocent smoke.

他断定， 部分原因是健康的身体对接触疾病的反应，部分原因是高大阴森的贝尔森烟囱冒着无辜的烟雾。

But because of the delayed timing, it’s thought to be similar to a poison ivy reaction, which activates immune cells called helper and killer T cells and causes inflammation.

但由于反应时间较晚，人们认为它类似于接触毒藤后的反应， 会激活称为辅助性和杀手T细胞的免疫细胞并引起炎症。

The population response to perceptible pollution may be pronounced when people have experienced a sharp increase in traffic and see the quality of their environment degraded.

当人们经历了交通方面大的变化并意识到他们周围的环境量降低了的时候，他们对染接触的反应就会比较明显。