In such cases, a simple re-arrangement and an additional power supply permit reading positive current.

在这种情况下，简单地重新安排电路，并使用一个附加的电源就能获得正电流。

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Scientists have done a test, instruments to a nerve cell membrane, into the positive current, and then measure its potential.

科学家们做了试验，用仪器向一个神经细胞膜内注入阳性电流，然后测量其电位。

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To change such limiting beliefs you will need to gather more positive facts about the situation than your current negative facts.

要想改变此类信念，你必须得收集更多正面的事实，多过你目前的负面事实。

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Paul Salem,who heads the Carnegie Center for Peace in the Middle East,argues that, despite the current impasse, it is a positive sign that Iraqi political adversaries are discussing their differences in parliament.

VOA: standard.2009.10.26

But at the end of 2012, if current positive jobs trends continue, it will be time to think about pulling back.

FORBES: Blame the Unemployed, At Least a Little

In economics it is axiomatic that positive and negative current account balances will ultimately be offset by changes in relative currency valuations.

FORBES: Germany And China Have The Gold And Will Make The Rules

In other words, the current positive attitude toward education is accurate if a student chooses the right degree (student readers: consider a math-related field if you want job security).

FORBES: When Will the Education Bubble Explode?