a.

1. 倔强的，顽固的；不听话的
   He is as stubborn as a mule.

   他像骡子一般执拗。

2. 顽强的，不屈不挠的
   The defenders put up a stubborn resistance.

   防守将士进行了顽强的抵抗。

3. 难处理的，难对付的
   This lock's rather stubborn; it needs oiling.

   这把锁很难开；得给它加点油了。

4. （病）难治好的
   I had a stubborn cold and coughed day and night.

   我得了很难治的感冒，日夜咳嗽。

5. （污渍）难去掉的
   This detergent can remove stubborn stains.

   这种去污剂能去除难洗的污渍。

adj.

1. determined not to change one's attitude or position.
2. difficult to move, remove, or cure.