Content在句中是形容词，意为：高兴；心满意足。可构成be content to do sth.或be content with sth.例如：
He is never content with small success.他从不对微不足道的成功表示出满足。
After Mr Black retired ,he was content to live in the country.布莱克先生退休后，心满意足地住在乡下。
Content还可用作及物动词，意为：使……满足。例如：
A quiet life and beautiful music contented Einstein.安静的生活和美妙的音乐使爱因斯坦十分满足。
2.The period between 1905 and 1915was an important one for Einstein;he began the research and studies which led to his new discoveries in physics.1905年到1915的这段时间，对爱因斯坦来说是一个重要的时期，他开始进行了使他在物理学方面获得新发现的研究工作。
Lead to 意为：引起；造成；导致。其中to是介词，后面接名词、代词或-ing形式。例如：Different opinions among young people can sometimes lead to arguments。有时，年轻人往往因不同观点引起争论。
3.It was said that he found in music the peace which was missing in a world full of wars and killings.据说，他在音乐中找到了平静，这种平静在一个充满战争与杀戮的世界上是没有的。
It is /was said+that clause 是一种常见的结构，意为：据说……，意思相当于People say/said+that clause.
在he found in music the peace中，表示地点的状语in music前置，放在动词found与宾语the peace之间，主要是为了使句子结构更紧凑，并使which was missing in a world…这一定语从句能紧跟着它所修饰的先行词the peace.
Full of意为：充满。在句中作定语，修饰前面的名词world.再如：
People full of energy are fit for the job .精力充沛的人才适合干这项工作。
4.Such was Albert Einstein ,a simple man and the 20th century’s greatest scientist.爱因斯坦就是这样一个人，一个纯朴的人，一位20世纪最伟大的科学家。
句中such作代词，当such作代词时，多作主语，指上面说的情况。谓语动词根据情况采用单数或复数形式。例如：
Such was the situation we were facing.这就是我们所面对的形势。
Such were his words! 这就是他所说的话。
5.He worked out just how much the light would be bent ;he could also work out how far the stars would appear to have moved.他计算出了光线将会弯曲的程度；他还能把恒星看上去移动了距离也计算出来。
短语动词work out表示“算出；解（题）；估计出；制定；想出；理解；弄懂”等意义。例如：
The maths problem is so difficult that nobody in our class can work it out .这道数学题太难，我们班上没人算得出。
The area can easily be worked out if you know the length and breadth.如果你知道其长度和宽度，这块地方的面积很快就能估计出来。
We must work out our plan as soon as possible.我们必须尽快制定我们的计划。
Tell me where you are going and I’ll work out the nearest route.告诉我你去哪儿，我给你想出最近的路线。
I can’t work out the meaning of this poem.我弄不懂这首诗的意思。
Nobody can work out how the fire started.没人能搞清楚这场火是怎么着起来的。
6.But Einstein stuck to his opinion and went on with his research.但是爱因斯坦坚持他的意见，继续不断地进行他的研究。
短语动词stick to 作“坚持（意见、看法、真理等）”解，有“执意不改变” （refuse to change）的含义。Stick to 中的to 是介词，后跟名词或代词。例如：
No matter what you say,I shall stick to my plan.不管你说什么，我会坚持我的计划。
If you stick to the truth,you have nothing to fear.如果你坚持真理，则没有什么可害怕的。