From the viewpoint of sentence structure, English sentences can be divided into simple sentences, compound complex sent...

从句子结构来看，英语句子可分为简单句、并列复合句和主从复合句。

The mixture and alternation between compound complex sentences and main-subordinate complex sentences and those between main-subordinate complex sentences are discussed in this article.

本文论述了英语中并列复合句和主从复合句之间以及主从复合句之间的混合与交替问题，并给出了一些常用的翻译方法。

This extremely poisonous carbon compound happens to be very reactive, allowing it to lock in hugely complex but stable chains of other molecules.

这种剧毒的碳化合物碰巧是非常活泼的，这使得它能够锁定在非常复杂但是稳定的其他分子链中。

This extremely poisonous carbon compound happens to be very reactive, allowing it to lock in hugely complex - but stable - chains of other molecules.

这种剧毒的碳化合物碰巧是非常的活泼的，这使得它能够锁定在非常复杂但是稳定的分子链中。

They also run applications to create and modify complex (compound) documents for use both within and outside their company.

他们还通过运行应用程序创建和修改复杂的（复合）文档，这些文档可以在公司内部和外部使用。