To make light, as dough, by the addition of yeast or other substance that will cause fermentation.

(加酵母等物)使发酵。

To touch with something which changes or modifies; mix.

使...渗入某物(以影响、改变它)。

A ferment mixed with a substance to render it light, as yeast with dough.

酵母；酵素。

Any influence which, working silently and strongly, causes changes.

影响(任何能造成改变的潜在势力)。