We can talk about a happening in three main ways: by describing it, by recounting its history, by telling a story about it.
有机化学现在足以让人发疯。它给我一种原始热带森林的印象,充满了最非凡的事物,一个可怕的、无尽的丛林,人们不敢进入,因为似乎没有出路。