in dead earnest

• 非常认真地

in dead earnest的用法和样例：

例句

1. You must take very seriously what you engage in.
   你必须非常认真地对待你所从事的工作。
2. He is very conscientious in the performance of his duties.
   他非常认真地履行职责。
3. I could tell she spoke in earnest.
   我看得出她是郑重其事地说的。