As you can see in Listing 2, whenever a new Bluetooth device is discovered, I just add it to a Vector and display the friendly name and Bluetooth address of the remote device.
在清单2中可以看出，每当发现新的蓝牙设备，我就把它加入Vector并显示远程设备的友好名称和蓝牙地址。
However, if given two vector floats as parameters, it will generate the fa (float add) instruction.
然而，如果传递两个vector float作为参数，就会生成fa(浮点加法)指令。
You have to add this vector to have zero so this is minus a and so minus a is nothing but the same as a but flipped over 180 degrees.
你需要加上这个矢量来得到，负a是这样，因此- A和A几乎一样，只是转了180度。
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