Magic shield: a visible spherical shield which defends anyone inside it from magical spells by bouncing their effects off the surface.

魔法护盾：一个可见的球形护盾，能够弹开魔法攻击保护内部的所有人。

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Among these, we include the "bubble, " a clear spherical shield that travels with you, blocking out unwanted dirt and noise.

FORBES: Magazine Article

As for the hardware itself, the mic arrangement means things can be neatly contained in one spherical shield, rather than two extremities on some stereo recorders.

ENGADGET: Zoom Q2HD Handy Video Recorder lets you stream and record on the move, we go hands-on