内容充实的英文：
substantial in content

参考例句：

Full of news;informative.
充满信息的;内容充实的

This article is crisp informative.
这篇文章风格明快，内容充实。

This article is crisp, informative
这篇文章风格明快，内容充实。

Solid and very readable, this novel is important as a social document aside from its value as literature
《现代喜剧》内容充实，十分易读，除了具有文学价值外，也是重要的社会文献。

Newspapers printed extra editions and filled their columns with detail for days and weeks afterward.
报纸则是发行号外版，且在接下来的若干天内才陆续有专栏的详细报道使内容充实。

substantial是什么意思：
adj. 大量的；实质的；充实的；结实的；牢固的

to hypostatize; to substantiate
使实体化

This is a substantial building.
这是个坚固的建筑物。

The architecture of this house is very substantial.
这座房子的结构很牢固。

To substantiate or authenticate with evidence.
证实用证据证明为真

His assessment is substantially correct.
他的评估大体上是正确的。

content是什么意思：
n. 内容；容量；目录；满足
v. 使满足
adj. 满足的，满意的

No man is content
人心不知足

Content is happiness
知足常乐

No man is content with his lot
无人满意自身的命运和境遇

This, to me, makes great content.
这给了我很大的满足。

We must demolish this contention.
我们一定要彻底驳倒这种言论。