propolis

/prop-uh-lis/US // ˈprɒp ə lɪs //UK // (ˈprɒpəlɪs) //

蜂胶,蜂膠,胶

Definitions

n.名词 noun

1
- : a reddish resinous cement collected by bees from the buds of trees, used to stop up crevices in the hives, strengthen the cells, etc.

According to Huber, who made this observation, the propolis is applied also to the insides of the cells.
Other bees then completed the work which this one had begun, till all the walls of the cells were framed with bands of propolis.
By leaving it on, travel stained and propolis spotted sections will result.
Propolis is sometimes put to a very curious use by the bees.
Yes, it is bee-glue (propolis); it is very common on old hives.