空范畴的英文：
empty category

empty是什么意思：
adj. 空的，空洞的，空虚的
v. 倒空，把…腾出，撤离
n. 空物
  • The bookshop was empty.
    书店里没有人。
  • The river empties into the ocean .
    这条河流入海洋。
  • He that is full of himself is empty
    自满者无知
  • The theater was half empty.
    剧院的座位一半是空着的。
  • Empties are not taken back.
    不退瓶子。
category是什么意思：
n. 种类，分类；范畴
  • There are different categories of books in a library.
    图书馆里有各种不同种类的书籍。
  • These two categories are aggregated in the tables.
    在表中这两大类综合在一起。
  • The forests are divided into the following five categories
    森林分为以下五类
  • There are two categories of processes based on this concept.
    以这一概念为基础的加工工艺有两类。
  • These Categories recognize different levels of competition.
    这些类别可被用来分辨出比赛里不同的等级。

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