区分大小写：对单词的字母大小写进行搜索（默认是忽略字母大小）

Case sensitive : search is performed with respect to the letter-case of the words (default is to ignore letter-case)

youdao

在书中鲜有出现的单词往往被词典所忽略，这其中就包括slenthum(一种印度尼西亚乐器)，还有令人讽刺的deletable(可以删除的，可以省略的，译者注)。

Words that rarely turn up in books often get omitted from dictionaries, including slenthum (an Indonesian musical instrument) and, ironically, deletable.

youdao

然后，实际的拼写检查首先在段落中逐个单词地进行，忽略数字，将单词与字典对比。

Then, the actual spell checking starts by moving from word to word in the paragraph, ignoring words that are Numbers and comparing the word to the dictionary.

youdao