apex / crown of the head / top / roof / most / to carry on the head / to push to the top / to go against / to replace / to substitute / to be subjected to (an aerial bombing, hailstorm etc) / (slang) to "bump" a forum thread to raise its profile / classifier for headwear, hats, veils etc
顶
=
丁
+
页
:
Dorothy Gale (di) is taking care of the receipts (页) inside of the engine ((e)ng3). She has a big nail (丁) on her head (顶) and every time there is a new receipt, she just pierces it onto the nail.