1·These ameliorations can deduce or remove the worst sequel of risk's eruptible.
这些方面的改进可以减少或消除风险爆发的恶劣后果。
2·It takes tens of thousands of years for the crust to generate enough eruptible magma, but once formed, these unstable magma bodies only last for centuries to a few millennia.
地壳聚集足够喷发的岩浆需要数万年的时间，但是一旦准备完毕，这些不稳定的岩浆体就只会在地壳内存在几百年到几千年的时间。