请教大大 我们都知道两个独立子句中需连接词，但为什么有些阅读测验段落只用逗号连
结(如下面两段皆用逗号)？
如果英文作文这样写是对的吗?
目前找不到相关解说，能否提供相关资讯，谢谢!
段落一
Around 1606, he had studied dispersion in prisms, measured the refractive indi
ces of different liquids placed in a hollow glass prism, studied refraction in
crystal spheres, and correctly understood refraction in the rainbow before De
scartes.
段落二
Perhaps the most interesting thing is that the first discovery of the sine law
, made by the sixteenth-century English scientist Thomas Harriot (1560-1621),
has been almost completely overlooked by physicists, despite much published ma
terial describing his contribution.

如果你是指“,.......,”这种，那是同位语，补充资讯用我记得台湾的英文义务教育好像没有特别强调这个如果把同位语去掉，句子在文法结构上还是可以成立，但是会变得意义不明台湾英文教育没有特别讲清楚这个，弄得很多人（包含以前的我）脱离课本后，看到英文长句就头痛不会读

1. google对等连接词连接四个独立子句 (基本上就是 A,B,C, and D. 后面三个子句同ㄧ个主词略掉不写)2. 台湾学生比较能看懂的写法 ..., (which was) made by... 所以不是独立子句despite是介系词，后头接noun phrase，所以也不是独立子