In one study,infected mothers began to take three anti-H.I.V.drugs while breastfeeding for up to six months.

VOA: special.2009.07.29

Path number 1 I'm going straight up in the V-T diagram.

路径1在T-V图上,竖直向上。

麻省理工公开课 - 热力学与动力学课程节选