初出茅廬 - Babe in the woods

She is a good driver, but as a mechanic, she is just a babe in the woods.
-她是一個好駕駛，但是她隻是個初出茅廬的修車技工。


He was a babe in the woods regarding politics.
-對於政治他可是初出茅廬，沒有經驗。


She knew nothing of what went on behind the scenes. She was a real babe in the woods.
-她真是個初出茅廬的丫頭，對於實際情況毫不知情。


---《流行英語成語》