A peaceful demonstration had been hijacked by anarchists intent on causing trouble.

和平示威已遭到蓄意制造事端的无政府主义者的操控。文中 hijacked 是 hijack 的过去分词形式(相当于形容词) ，修饰 social media trends，意思是：被操纵的热搜，就是我们平时说的“花钱买热搜”。讲个冷笑话，如果你有个朋友叫 Jack ，在飞机偶然见到他之后， 招呼可不要随便说 Hi。

For that, I would argue that actually the hallmark that I study, epigenetic modifications is probably the most predictive as of right now.

我认为就目前而言，实际上我研究表观遗传修饰的标志可能是最可预测的。

Gradable adjectives are the ones that you can make stronger or weaker by adding modifiers, like very or a bit or quite.

可分级形容词是可以通过添加修饰语变得更强或更弱的形容词，例如 very 、 a bit 或 quite 。

Rather, they cover isolated forms of the genes, which have been identified, snipped from the genome and chemically modified to make them analysable in a laboratory.

恰恰相，专涉及的是这些基因的分离基因，已被测定的分离基因是从基因组中剪切出来经化学方法修饰后可用于实验室实验分析的一类基因。

They allow for degrees of comparison and can be modified by adverbs such as " more" or " less." For example, " hot" and " cold" are gradable antonyms because there are intermediate states such as " warm" and " cool" between the two extremes.

它们允许比较程度， 并且可以用副词（例如“更多” 或“更少” ）进行修饰。 例如，“热” 和“冷”是可分级的义词， 因为在两个极端之间存在“暖” 和“冷” 等中间状态。