She likes to read, cook, and dance. 这一句里列举的三个含义都是用动词的”to do”形式来表达的。
She enjoys reading, cooking, and dancing. 这一句里列举的三个含义都是用动词的”-ing”形式来表达的。
She likes books, food, and movies. 这一句里三个都是名词。
She enjoys mystery novels, Mexican food, and romantic movies. 这一句里三个也都是名词，但是每个名词前面还都加了一个修饰用的形容词。
上面几个例句都比较简单，但是如果句子比较长也还是可以保持平行性的。
Treating cultured endothelial cells with LPS increased the expression of endothelial-lymphocyte adhesion molecules, release of pro-inflammatory cytokines, and permeability of the endothelial monolayer. 这句里三个含义都是用名词短语表达的。
我们可以换一种说法，改成都是动词短语： Treating cultured endothelial cells with LPS upregulated the expression of endothelial-lymphocyte adhesion molecules, increased the release of pro-inflammatory cytokines, and reduced endothelial-endothelial interaction.
