When fully folded, it would behave like a cellphone; as it unpacks, it could fit alternate roles depending on the position of each individual screen.

比如当设备被 折叠成单屏显示状态时，可以作为手机使用 ；而 各个屏幕处在展开状态时，则可以依据各个屏幕的相对位置实现不同的应用功能。

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The cascade switch configuration is an alternate form of multi-position switch.

级联开关配置是另一种形式的多位置开关。

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Coordinate System is an alternate definition of a part's position in space that is more convenient for the inspector than its true coordinates.

坐标系是部件空间位置的替代定义，对于检查器来说，该替代定义比部件空间位置的真实坐标更为方便。

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Another method is to swap the total return on the NCREIF index broken down by property sector, allowing investors to take a position in an alternate property sector in which they may not own properties, thus allowing investors to swap the returns from office related real estate for retail real estate.

FORBES: A Guide To Real Estate Derivatives