• Dr.Huerta says many Latin and South American communities do not have mammography machines, and there is a general lack of knowledge about the disease.

    VOA: standard.2010.02.02

  • to express a lack of complete knowledge about the multitude of subjects.

    它可以用来表达你对一些话题并不完全了解。

    I don't know 课堂 - SpeakingMax英语口语达人

  • but also very non-affrontively, express a lack of complete knowledge

    又不冒犯地表达对某事不完全清楚,

    I don't know 课堂 - SpeakingMax英语口语达人

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定