[ 第三人称单数 expatiates 现在分词 expatiating 过去式 expatiated 过去分词 expatiated ]
expatiate on a subject 详述一个题目
V to enlarge (on a theme, topic, etc) at length or in detail; elaborate (on) 阐述(主题、话题等)
In this country you all so well-informed about the Far East, and such devoted friends of China, that I do not need to expatiate on the situation there.
在这个国家你们对于远东局势是很熟悉的，也一直是中国的忠实朋友，因此我在这里就不多说了。
There are five parts to expatiate it: (1) Tongxin Theory.
本章分五个方面来阐述：1 .童心说。
At the end of the paper, we expatiate the kernel part of the hardware.
最后，对硬件实现的核心部分作了详尽的阐述。
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