When you copy cells into a target range containing merged cells, the target range gets unmerged first, then the copied cells are pasted in. If the copied cells are merged cells, they retain their merge state.
在将单元格复制到包含合并的单元格的目标区域时，目标区域首先会取消合并，然后将复制的单元格粘贴在其中。如果复制的单元格为合并的单元格，则这些单元格会保持其合并状态。