網友回答：
替我們趕走壞人；貓會捉老鼠；啄木鳥是森林的好醫生…… so that it can stand firmly on the straight trunk，使它能夠牢牢地站在直直的樹干上，hardworking woodpeckers fly from one tree to another every day. they treat every tree carefully. they are really good doctors in the forest. two of which are faci
溫馨提醒：隨時光變遷，文中所陳述觀點；準確性、難免有所變動，因此文中觀點僅供參考。
