diàn wǎng / chāo fù hè / huì / dǎo zhì / dà guī mó / tíng diàn / bì xū / tí qián / yù fáng电网超负荷会导致大规模停电,必须提前预防。An overload on the power grid can cause large-scale blackouts, so precautions must be taken in advance.