?
查询技巧:
1、输入单个单词准确查询。
2、使用%模糊查询,匹配任意长度字符:
   %a    以a结尾的单词;
   ab%    以ab开头的单词;
   %ac%    含有ac的单词。
3、使用_模糊查询,匹配单个任意字符:
   _a_    三位且a在中间的单词;
   _ad    三位且ad结尾的单词;
   ac_    三位且ac开头的单词;
   _a    两位且a结尾的单词;
   a_    两位且a开头的单词。
4、带连字符-的单词,需含-字符才能模糊查询,如well-know需输入 well-% 。
5、在手机键盘上,如果g上有%和v上有_,则可长按输入。

undergone

英 / ˌʌndəˈɡɒn /
v. 经历(undergo 的过去式和过去分词)

1. The feeding of dairy cows has undergone a revolution.
奶牛的喂食已经历了一场革命。
2. She had undergone an amazing metamorphosis from awkward schoolgirl to beautiful woman.
她经历了从笨女生到大美人这一令人惊讶的变化。
3. The Sahara is a highly diverse, albeit dry, region that has undergone major climatic changes since 10,000 B.C.
撒哈拉沙漠虽然干燥,但却是一个高度多样化的地区,自公元前10000年以来经历了重大的气候变化。
4. Wilde is also a friend of Yeats, but Yeats' poetry has indeed undergone important and notable stylistic changes.
王尔德也是叶芝的朋友,但叶芝的诗歌的确经历了重要的值得一提的风格上的改变。
5. I had undergone an operation in which part of a bone in one leg was used to replace the shattered bone in the other.
我经历过一场手术,用一条腿部分的骨头代替另一条腿粉碎的骨头。