例句與造句

1. Study on empty categories in several chinese patterns
   漢語不同句式中的空語類探析
2. Empty category principle
   虛范疇原則
3. Searching for an item in the tradeskill search box should now hide empty categories
   在“專業(yè)技能”框中搜索時(shí)，空的目錄不再列出。
4. It's difficult to find empty category in a sentence. 用empty category造句挺難的