lead-in造句

1、The joke served as a lead-in to a discussion of more serious matters
这个笑话是为了引入讨论更严肃的问题

2、Tell a story to ss. Lead-in the new sentences:This is an apple. /That's a pear.
通过讲故事，引入新句型，并在讲的过程中适时复习水果名称。

3、The joke served as a lead-in to a discussion of more serious matters.
这个笑话是为了引入讨论更严肃的问题

4、Lead-in CAPP system based on SolidWorks feature model
基于Solid Works特征模型的导入式CAPP系统

lead-in翻译