Find the two complex sentences, please.

请找出两个复合句。

The concept of "casual complex sentences" is toted by Mr.

“因果类复句”这一概念是由邢福义先生提出来的。

Also avoid long and complex sentences with multiple clauses.

还要避免有很多从句的长句复杂句。

Sentences containing such clauses are called complex sentences.

包含这种从句的句子称为复合句。