The idea is that mothers would pour the liquid into the baby's mouth as part of an H.I.V.treatment program.

VOA: special.2010.05.24

Normally I couldn't do that Vdp because this term would have p dV plus V dp, but we've specified the pressure is constant, so the dp part is zero.

一般情况下我不能这么写,因为这一项会包含pdV和，但是我们已经假定压强为常数，所以包含dp的部分等于零。

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