She has pledged U.S.support in a number of areas, including helping Pakistan repair and upgrade key electricity generating stations as the country faces severe power shortages.
VOA: standard.2009.10.28
That quantity in parenthesis, I have a mass which is a positive number. Something raised Something raised to the fourth power has got to be positive.
顺便说一句,质量这个量是个正数,四次方的值,肯定是正数。
That quantity in parenthesis, I have a mass which is a positive number. Something raised Something raised to the fourth power has got to be positive.
顺便说一句,质量这个量是个正数,四次方的值,肯定是正数。
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