1 | Black clouds are an unmistakable sign of coming rain. | |
2 | The earthquake was very sudden. There'd been no warning signs whatsoever. | |
3 | Unfortunately, most earthquakes do not have such obvious precursors. | |
4 | Defeat in this important battle was the beginning of the end for us. | |
5 | They then examined their arteries for arterial stiffness, often a precursor to high blood pressure and heart disease. |