1、element

成分;组成部分

The exchange of prisoners of war was one of the key elements of the UN's peace plan.

交换战俘是联合国和平计划的一个重要部分。

（社会或组织内部具有相同目标、信仰或习惯的）一群人，一组人，分子

criminal elements within the security forces.

安保部队中的犯罪分子

the hooligan element.

流氓团伙

自在;适得其所;如鱼得水

My stepmother was in her element, organizing everything.

我的继母得心应手地料理着一切。

Maybe it's because they're so out of their element that they feel the need to talk.

可能是因为他们感到非常不自在，所以觉得有必要说说话。

2、ultimate

最后的；最终的

He said it is still not possible to predict the ultimate outcome.

他说现在还无法预料最终的结局。

The ultimate aim is to expand the network further.

最终目的是为了进一步拓展该网络。

最根本的；最基础的；最原始的

Plants are the ultimate source of all foodstuffs.

植物是所有食物的最根本来源。

The ultimate cause of what's happened seems to have been the advertising campaign.

出事的最根本原因似乎在于那场广告宣传活动。

极端的；极度的；令人极其不快的

Being removed from his post during operations is the ultimate humiliation for a ship's captain.

在执行任务的过程中被免职，这对一位船长来说是莫大的耻辱。

Treachery was the ultimate sin.

背叛是最不可饶恕的罪孽。