点击下方单词,选择对的这个单词
点击下面链接下载与本句相关的学习资源，包括PDF教材和音频练习，方便课后复习：
1. 服务业;服务性行业A service industry is an industry such as banking or insurance that provides a service but does not produce anything.
1. an industry that provides services rather than tangible objects
多通过句子记忆单词，而不是单独死记硬背。
