In the process of formation, the material must have received an environmental signal that reflects a change in climate and that can be deciphered by modern physical or chemical means.
在形成的过程中，材料必须接收到环境信号，反映气候变化，并能被现代物理或化学手段破译。
2
Small sugar fragments can set off a signal cascade that increases inflammation and scar formation. A small peptide can block this process and allow scar-free healing
糖碎屑能引发皮肤快速发炎和形成疤痕的显著层叠。
3
Also, pneumonia raises blood levels of a type of a chemical signal called a cytokine that promotes the formation of blood clots and that decreases the efficiency of the heart.