粤典 (words.hk)香港词
歇後語，白費工夫 (literally meaning "using sand to try and fill up the sea", which means someone is doing something that is useless or with no effort-worth.)
語句擔沙填海
daam1 saa1 tin4 hoi2收录于 1 本词典
daam1 saa1 tin4 hoi2
· 收录于 1 本词典粤典 (words.hk)香港词
歇後語，白費工夫 (literally meaning "using sand to try and fill up the sea", which means someone is doing something that is useless or with no effort-worth.)
語句