工人们正在疏浚港口以清除淤泥，保持航道畅通。

Workers are ___dredging the harbor to remove silt and keep the waterway clear.

那个老歌突然唤起了他对大学时光的回忆。

The old song suddenly ___dredged up his memories of college days.

她在炸鸡前先轻轻裹上面粉。

She ___dredged the chicken in flour before frying it.