Otherwise, it's still highly reliable, returning accurate readings 90% of the time.

否则，它仍然非常可靠，有九成的把握返回准确的读数。

Suppose every sensor gives perfectly accurate readings of temperature, pressure, humidity, and any other quantity a meteorologist would want.

再假定每个传感器都极极端准确地读出了温度、气压、温度和气象学家需要的任何其他数据。

Otherwise, it’s still highly reliable, returning accurate readings 90% of the time.

否则， 它仍然非常可靠，90% 的时间都会返回准确的读数。

No solution is perfect, but you can get a pretty accurate reading by attaching the voltmeter on either side of the device that you want to measure.

没有完美的解决方案，但您可以通过将电压表连接到要测量的设备的任一侧来获得相当准确的读数。