The sentence consists of a main clause and a subordinate clause.
这句中有一个主句和一个从句.
《简明英汉词典》
All subordinate clause are tree's leafage.
所有从句都是树的叶子.
期刊摘选
A subordinate clause: A clause depends on the main clause in a sentence.
一个从句: 条目取决于主句在句子.
期刊摘选
英英释义
Noun
1. a clause in a complex sentence that cannot stand alone as a complete sentence and that functions within the sentence as a noun or adjective or adverb