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（容器的）边沿，边缘，外缘
The rim of a container such as a cup or glass is the edge that goes all the way round the top.
例句
She looked at him over the rim of her glass.
她的目光越过玻璃杯的边沿看着他。
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（圆形物体的）边框，边缘
The rim of a circular object is its outside edge.
例句
...a round mirror with white metal rim.
镶着白色金属边框的圆镜子
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(污垢等)一周，一圈
If there is a rim of dirt around a surface there is a dirty mark around it.
例句
There was already a rim of dark hairs and soap round the basin.
洗脸盆边上已经有一圈黑头发和肥皂沫。
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（篮球的）篮筐，篮圈
In basketball, the rim is the metal ring that holds the net through which players have to try to throw the ball to score.