The screen cannot shut out the sunshine. 篩子遮不住太陽(yáng)。
Mother would accumulate the river sand into a large heap drying in the open and then riddle with a screen before selling to the building boss. 母親需要把撈上來(lái)的河沙堆積成一個(gè)巨大的沙丘,在空氣中晾曬干后,用篩子再篩一次,然后才能賣(mài)給建筑商。