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. 面有愧色的;羞愧的;惭愧的If you say that someone has a hangdog expression on their face, you mean that they look sad, and often guilty or ashamed.
多通过句子记忆单词，而不是单独死记硬背。
