1. Heavy snow is sifting onto the ground. 满天大雪撒落在大地上。
2. Sift the cake flour and almond flour into the milk mixture. 筛入低粉和杏仁粉，混合均匀直到没有粉粒为止。
3. In a large bowl, sift together cake flour, flour, baking powder, baking soda, salt, and poppy seeds. 在一个大盆内，将低粉、普通面粉、泡打粉、苏打粉、盐和罂粟籽混合过筛。
英英解释
v.
1. move as if through a sieve
2. separate by passing through a sieve or other straining device to separate out coarser elements
3. check and sort carefully
4. distinguish and separate out
