a glutton for punishment

1. 隨時願意做苦差事的人
   She kept coming to work even when she was ill: she's a real glutton for punishment.

   即使病了她仍繼續工作，她真是不怕吃苦。

a glutton for work

1. 工作狂
   He's a glutton for work.

   他是個工作狂。

• a glutton for punishment
  a person who is always eager to undertake difficult tasks.