The bookholder (10) can either be handheld or be placed or attached on a supporting surface.
书夹(10)可以手持或者置于或附装到支承面上。
2
The bookholder (10) has displaceable arms (20) and a back member (12) that can facilitate retaining a book in an open displayed manner.
书夹(10)具有可移动的臂(20)以及背部件(12)，该书夹能够有助于将书本保持为打开显示方式。
3
While these bee-wearers were impressive, they didn't come close to the current Guinness Book of Record-holder in the category for "most pounds of bees worn on the body."