That potential difference is generated by the movement of ions, principally sodium and potassium across the membrane.

电势差是由离子运动造成的,特别是钠和钾的跨膜运动

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The trader profits on the short stock if shares drop, while the long calls hedge potential bullish movement in the price of the underlying through expiration in March.

FORBES: DISH, Crox Call Options Alive With Bullish Speculation

Earlier today the Financial Crimes Enforcement Network issued an advisory to U.S. financial institutions to take reasonable risk-based steps with respect to the potential increased movement of assets that may be related to the situation in Libya.

WHITEHOUSE: Press Briefing

Watch potential acquisition movement carefully.

FORBES: Signs That It Might Be Time To Sell