要晓得，在食物链的位置越低，潜伏疾病的任何征兆就越紧张。

You see, the lower down the food chain you are, the more important it is for you to hide any sign of illness.

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在数字化前兆遥测台网的信号传输链路中，光隔主侧、光隔副侧是一个故障多发点。

The main side and secondary side of light insulation are the malfunction prone points.

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