He carefully unpicked the stitches to repair the fabric.

他小心翼翼地拆开针脚来修补布料。

I want the seam unpicked.

我希望有人拆开这条缝。

She unpicked the stitches from a curtain.

她拆开窗帘的缝线.

Only in the past few decades have some of those assumptions been unpicked.

只在过去的几十年里这些想法才被指出来。

To avoid repeating the same mistake, the thinking goes, Democrats need a big-bang reform that cannot be unpicked later.

按照这种思路，为避免重蹈覆辙，民主党人需要一项以后不能被取消的大改革。

She found the number of species is dwindling and some species are dwarfing due to selection pressure because only the smallest flowers remain unpicked .

她发现那些种类在缩小和矮化病其原因在选择的压力因为只有很小的花保留未摘。