While laptop sensors are not very sensitive, their great Numbers may have value, Kanamori says.
虽然膝上型计算机传感器不是十分敏感，但它们巨大的数量也许有价值，Kanamori说。
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"There has been seismicity but not really great-earthquake seismicity," says Hiroo Kanamori, a seismologist at the California Institute of Technology in Pasadena.
In general, such systems are in their infancy, says Kanamori, a Caltech professor emeritus of geophysics and former director of Caltech's seismological laboratory.