However, when two monkeys were placed in separate but adjoining chambers, so that each other could observe what the other was getting in return for its rock, their behaviour became markedly different.
主干是their behaviour became markedly different
翻译：但是，如果将两只猴子分开放在相邻的房间离，以便让他们可以看见彼此用石头换得的东西，这是他们的表现就显著地不同了。
He helped popularize the idea that some diseases not previously thought to have a bacterial cause were actually infections, which aroused much controversy when it was first suggested.
翻译：他帮助普及了以现被认为不是有细菌原因的疾病实际上是传染造成的这一观点，这在最初提出时引起了很大争议。
修正：他曾经帮助普及了这一观点——某些之前被认为不是由细菌引起的疾病其实是由感染造成的。这种观点第一次被提出时，曾引起了激烈的争论。
Infants are wired to look at parents' faces to try to understand their world, and if those faces are blank and unresponsive—— as they often are when absorbed in a device—— it can be extremely disconcerting for the children.
wired adj.联网的，连线的，兴奋的，紧张不安的，敏感的
翻译：婴儿会通过观察父母的表情以尝试去理解他们的世界，如果这些表情是空白的或者反应迟钝的——像他们沉浸在数码设备中的时候一样——这回造成儿童嫉妒的心理不安。