回想的英文：
recall
recollect
think back

参考例句：

Recur to; go back to
回想;重回

Reflect upon sb/sth;recall sb/sth
回想或想起某人[某事

His mind [thoughts] wandered back to his school days.
他回想到他的学生时代。

In retrospect
回想,回顾

Revive the past events for many years of slowly.
慢慢地回想多年的往事。

Look back; look behind
回想;畏缩;追忆

Retrace one's past actions
回想过去的行动

An evening reminiscent of happier times.
令人回想幸福时光的傍晚

Grown-ups often look back to the old days.
成年人常常回想过去的日子。

The afterthought is good, but forethought is better.
事后回想有益，事前考虑更佳。

recall是什么意思：
v. 回忆起；召回；收回；撤销；取消；使复苏，使恢复
n. 唤回；回想，回忆；记忆力；收回；撤销；取消

She recalled her promise.
她取消了约言。

The dead can not be recalled to life.
死者不能复活。

Recall your messenger.
召回你的使者。

recollect是什么意思：
v. 回忆，想起

Her recollection seems to be a fantasy.
她的回忆似乎只是一种一厢情愿的幻觉。

The recollection brightened his eyes.
追忆往事，使他的眼睛都亮了。

He had no recollection of the crash.
那次车祸他一点也不记得了。

think是什么意思：
v. 认为；想；琢磨；试想；预期；一心想；计划；记得

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。