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。