灰塵。你ㄌㄧˋLí是ㄒㄧ˫sī按ㄢˋ怎ㄗㄨㆩˋán‑tsuánn無ㆠㄜˊbô共ㄍㄚ˫kā桌ㄉㄜㆷ頂ㄉㄧㄥˋtoh‑tíng的ㆤˊê塗ㄊㆦˊ粉ㄏㄨㄣˋthôo‑hún拭ㄑㄧㆵ拭ㄑㄧㆵ咧ㄌㆤㆷtshit‑tshit‑‑leh??你為什麼不將桌上的灰塵擦一擦呢?