However, if you don't have the money, you will have to borrow money from person B to pay back person A. This situation sends you deeper in debt.

然而当你没有足够的钱还款的时候，你就得从B某人那里借钱用来还欠的A某人的钱。 这种环环相扣的借钱还钱的状况会使你的财政状况变得更糟。

youdao

B And mu B in the liquid phase B has to be equal to mu B in the gas phase. S o four minus two constraints means you have two degrees of freedom.

液相的μ,必须等于气相的μ,所以四减去二意味着,你有两个自由度。

youdao

METHODS: The HPLC method with Evaporative Light Scattering Detector (ELSD)was established to determine the content of ginkgolide A, B in the Ginkgo injection.

方法：采用高效液相色谱蒸发光散射检测器（ ELSD）检测法测定银杏酮酯注射液中银杏内酯A，B的含量。

youdao

So we can draw that for 1 s a, we can also draw it for 1 s b, and what I'm saying for the molecular wave function is that we have the interference between the two, and we have a constructive interference, so we end up adding these two wave functions together.

所以我们可以对1sa画出它来，我们也可以对1sb画出它来，对于分子波函数我要说的是,它们两者之间会干涉，这里我们有相长干涉，所以我们得到的是波两个波函数加起来。

麻省理工公开课 - 化学原理课程节选

sa So we have 1 s a, and we're drawing this as having a positive amplitude, but since we have destructive interference we're going to draw 1 s b as having the opposite sign, so we have a plus and a minus in terms of signs.

我们有，我们把这画成一个正的振幅，但因为我们是相消干涉,我们把1sb画成相反的符号，所以我们有一正一负两个符号。

麻省理工公开课 - 化学原理课程节选