本期内容：
Even Apple will not be able to explain how its forthcoming iPhone X can spot some efforts to fool its facial recognition system.
The firm has released a guide to the Face ID system, which explains that it relies on two types of neural networks, one of which has been specifically trained to resist spoofing attempts.
But a consequence of the design is that it behaves like a "black box".

Forthcoming: 即将推出的
Spot:察觉
Facial recognition:脸部识别
Neural:神经的
Spoof:哄骗

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