dilation
noun /daɪˈleɪʃn/
/daɪˈleɪʃn/
[uncountable, countable]- the fact of a part of the body becoming or being made larger, wider or more open
扩张：身体的一部分变得或变得更大，更宽或更开放 - The doctor checked his eyes but there was no abnormal pupil dilation.
医生检查了他的眼睛，但没有异常的瞳孔放大。
- The doctor checked his eyes but there was no abnormal pupil dilation.