have a plum in one's mouth

(Brit.)have an accent thought typical of the English upper classes

(英)有英國(guó)上層階級(jí)口音

like a ripe plum (或 ripe plums)

used to convey that something can be obtained with little or no effort

輕而易舉地，垂手而得地

the country is likely to fall into the enemy's hands like a ripe plum.

這個(gè)國(guó)家有可能輕而易舉地落入敵人的手中。