Additional code changes included widening stairways; self-luminous exit pathways; third stairways in buildings over 420 feet; boosting overall fire resistance; and more.

其他代码更改包括加宽楼梯； 自发光出口通路；超过 420 英尺的建筑物中的第三个楼梯； 提高整体耐火性； 和更多。

These hormones raise both the heart rate and the blood volume, and therefore cardiac output, while also constricting vessels in less essential regions, increasing the overall resistance, and therefore pressure.

这些激素提高心率和血容量，从而提高心输出量，同时也收缩不太重要区域的血管，增加整体阻力，从而增加压力。

Well, in this setup, the current has an additional – but identical – path to go through, so the overall resistance is half of what it was with a single-wire circuit.

好吧，在这个设置中，电流有一个额外的 - 但相同的 - 路径要通过，所以总电阻是单线电路的一半。