Poor rake! His eyes with rheumy moisture flow; the little bird that spoke of summer days to follow, lies frozen in the snow.
可怜的浪子，他感冒了，泪流不止，而那只代表夏季即将到来的燕子冻死在雪地里。
2
Based on the sedimentation rule, the bottom sediment distribution in rake thickener is analysed, and bottom flow separation is suggested to raise the production efficiency.