By contrast, there are some similarity on size and thickness of exine.

Many of the groups exist in name only.

许多团体实际上是有名无实。

He thought that if he couldn't see something, it didn't exist.

他认为自己看不见的东西就不存在。

I would have to learn, little by little, to exist alone.

我得慢慢学会独自生活。

The magic cure for inflation does not exist.

抑制通货膨胀没有什么灵丹妙药。

Various insurance schemes already exist for this purpose.

已经有各种保险计划可以实现这一目的。

Man cannot exist without oxygen.

人没有氧气就不能生存.

There exist many sources of energy both potential and kinetic.

存在着许多势能和动能的能源.

If you hide away your problems and pretend that they don't exist they will just continue to mount up.

如果你把问题藏起来，假装它们不存在，问题只会越积越多。

Many theories on punishment exist, all of which are variations on a theme.

关于惩罚的理论有很多，虽形式略有不同，但其主旨都是一样的。

He is always imagining dangers that don't exist.

他总是想着那些其实并不存在的危险.

I exist from one visit to the next.

我的生活就是一个接一个的访问。

It is possible that such cases exist.

盖有之矣.

Machines now exist to pack olives in jars.

现在可用机器将橄榄装进罐子里。

When the conditions exist , go ahead ; when they don't exist , then create them and go ahead.

有条件要上, 没有条件, 创造条件也要上.

Unless Hitler withdrew his troops from Poland by 11 o'clock that morning, a state of war would exist between Great Britain and Germany.

如果希特勒那天上午11点前不从波兰撤兵，英德两国便将处于战争状态。

Such people do not exist.

这样的人是不存的的。

It's in the underdeveloped eastern region of the country that the biggest problems exist.

最大的问题存在于这个国家贫穷落后的东部地区.

Without the greenhouse effect, life couldn't exist on earth.

少了温室效应, 地球上就不会有生命存在.

Life may exist on this planet.

这颗行星上可能存在生命.

The old man found it difficult to exist on his pension alone.

那位老人发现单靠养老金难以生活.