But first, the researchers had to get trehalose into blood cells.

但首先，研究人员必须让海藻糖进入血细胞。

They used ultrasound to drill temporary holes in the cell membranes-which let some trehalose get in.

他们用超声波在细胞膜上钻出临时小孔，让一些海藻糖进入。