But the Valley stands on ground that is as unstable, seismically and metaphorically, as it was in the earlier bust. Another bubble-this time, not of the Valley's making-has burst.
但同时硅谷也站在一个不稳定的、地震多发同时极富象征性的基础之上：正如先前泡沫破裂之时一样，目前另外一个泡沫——当然不是硅谷制造的——也破裂了。
Early on, rescue efforts were difficult because the ground was too soft and unstable for machinery, forcing rescue workers to use shovels, hoes, and their hands to dig out any possible survivors.
早期救援工作很难进行，因为土质过于松软不利于机械的稳定停放，促使救援工人用铁锹、锄头甚至双手去挖出任何可能的幸存者。
On account of the weak fault current and unstable fault arc, the problems of the single phase to ground fault line selection in the non-solid earthed network have never been thoroughly resolved.
由于故障电流小、电弧不稳定等原因，小电流接地系统单相故障选线问题始终没有得到彻底解决。
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