1、existence

存在;实有

the existence of other galaxies.

其他星系的存在

The Congress of People's Deputies in effect voted itself out of existence.

(苏联)人民代表大会的投票在事实上终结了自身的存在。

（尤指逆境中的）生活，生活方式

You may be stuck with a miserable existence for the rest of your life.

你可能一辈子都要过着悲惨的生活。

Their day-to-day existence was routine.

他们的日常生活很平淡。

2、come back

回忆起;回想起来

He was also an MP — I'll think of his name in a moment when it comes back to me.

他当时也是一位国会议员，他的名字我得想一下才能记起来。

When I thought about it, it all came back.

当我回想起来，往事全都涌上了心头。

重新流行;再度时兴

I'm glad hats are coming back.

我很高兴又开始流行戴帽子了。

3、universe

宇宙

Einstein's equations showed the Universe to be expanding.

爱因斯坦的方程式表明宇宙正在膨胀。

Early astronomers thought that our planet was the centre of the universe.

早期的天文学家认为我们的星球是宇宙的中心。

经验领域

Good writers suck in what they see of the world, recreating their own universe on the page.

优秀的作家从他们眼中的世界汲取体验，然后在纸上重塑自己的天地。

They marked out the boundaries of our visual universe.

他们标出了我们视觉经验领域的界限。