The business hit a sticky patch and lost ￡4.8 million.

【sticky】该业务遇到了一个棘手的问题，损失了480万英镑。

Human insulin molecules are stored in clusters of six, thanks to a sticky patch at one end of the peptide – a hydrophobic region that also helps insulin bind to receptors and tell cells to take up glucose.

人胰岛素分子以六个一簇的形式储存— 由于肽的一端有一个粘性斑块，— 疏水区域也有助于胰岛素与受体结合并告诉细胞吸收葡萄糖。