“derisive”造句，怎麼用derisive造句

Hermione was biting a piece of bread pulling it from between her teeth with her fingers in a slow slightly derisive movement. She turned to Birkin.

And if my use of the word 'brave' in this context makes you scoff, you must not have the derisive little voice in your head that I do, whispering that you're a failure, contemptible, poor.