The transfer of taxi license ownership is a kind of commercial activity, "a department spokesperson said by E-mail."

“出租牌照的所有权转移是一种商业行为，”一个部门的发言人通过电子邮件说。

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Want to use your smartphone, tablet, or e-reader on a plane during taxi, takeoff, or landing?

FORBES: BYOD on a Plane? Not so Fast, Says FAA.

The lawsuit is yet another hurdle for e-hails, one of the chief initiatives for reimagining the city's taxi fleet backed by Mayor Michael Bloomberg and David Yassky, the chairman of the Taxi and Limousine Commission.

WSJ: Cab-Hail Apps Are the Target of a Lawsuit