And you can use mnemonics to try to keep these straight I see the t as sort of a plus sign.
你可以使用记忆术来记清它们,我将T看成是加号。
Because what we're saying here is we want a function of a plus b, which is equal to the same sort of function of a times the same sort of function of b.
因为我们这里需要的,是a + b的函数,这个数值等于a的函数,乘以b的函数。
That will be $50, plus a service charge of $2.50.
您消费50元,另加2.50元的服务费。
Getting a grade like a B-plus or a C-minus adds or subtracts a few tenths of a point.
VOA: special.2009.03.05
And you can use mnemonics to try to keep these straight I see the T as sort of a plus sign.
你可以使用记忆术来记清它们,我将T看成是加号。
So we could think about comparing the potassium ion to a sodium ion. They have the same charge of plus one.
我们可以想象比较一下钾离子,与钠离子,它们都同样带有正一价的电荷。
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