That alkalinity drops, however, as the concrete cures.

然而，随着混凝土固化，碱度会下降。

The high alkalinity of uncured cement stops the moisture activating the spores.

未固化水泥的高碱度阻止水分激活孢子。

The amount of carbon dioxide that is exhaled is important in regulating the acidity or alkalinity of the blood.

呼出的二氧化碳量对于调节血液的酸度或碱度是重要的。

At the same time, the secretion of gastrin is activated by other signals, like the rise in alkalinity caused by the stomach acid getting neutralized as it does its job.

与此同时，胃泌素的分泌被其他信号激活，比如胃酸在发挥作用时被中和引起的碱度上升。

The capsules, though, tend to stick together in the liquids used as electrolytes during electroplating, and are also destroyed by the extreme acidity or alkalinity that is often involved in the process.

在电镀过程中，不过，胶囊容易在使用的电解质液体中黏在一起，而且也会由于这一过程中通常出现的极酸性和极碱性而受到破坏。