* edge
n. 边，边缘
He stood on the edge of the cliff.
他站在悬崖边上。
rim the rim of a cup, bowl, etc
杯、碗等的边
a pair of spectacles with gold rims
一副金框眼镜

* brim
n. (杯、碗等的)口，边沿
two wine glasses, filled to the brim
两只斟满的酒杯
* brink
(...的)边缘
on the brink of collapse/war/death/disaster
濒于崩溃/战争/死亡/灾难