思想史的英文：
history of ideas thinking history

history of Libya
利比亚历史

History is contingent.
历史是偶然的。

The history of liberty is a history of the limitation of government power.
自由的历史是限制政府权力的历史。

interchange ideas
交换意见,2. 使互相易位,3. 使交替发生,轮流进行,vi.1. 交换位置;交替发生[( with)]

This is a slant idea.
这是个有偏见的想法。

At this moment an idea burst upon him—a glorious idea.
此刻他突然产生一个想法，一个十分美妙的想法。

I think and think and cannot cease from thinking.
我想了又想，一直想个没完。

Think of solar power, and you probably think of photovoltaic panels.
当考虑到太阳能，你一定会想到光伏电池板。

Do you think it will rain? -- Yes, I think so.
你看会下雨吗？是的，我想会下雨。