re·tar·da·tion
noun/ˌriːtɑːˈdeɪʃn/
/ˌriːtɑːrˈdeɪʃn/
[uncountable] (formal)- the fact of making the development or progress of something slower
阻碍；减缓；使放慢速度 - Many factors can lead to growth retardation in unborn babies.
许多因素可以导致胎儿发育迟缓。
- Many factors can lead to growth retardation in unborn babies.