| 摘要 |
A device includes a container configured to be placed between a pair of adjacent fingers of a user. The outer surface of the container may include a first recess portion for receiving one of the user's fingers, the first recess portion facing in a first direction and including a first recess upper part and a first recess lower part. The outer surface may also include a second recess portion for receiving another of the user's fingers, the second recess portion facing in a second direction substantially opposite to the first direction and including a second recess upper part and a second recess lower part. At least one of the first recess upper part and the second recess upper part may be configured to at least partially overlie a user's finger. Additionally, at least one of the first recess lower part and the second recess lower part may be configured to at least partially underlie a user's finger.
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