但要理解这里面的差异和进步，我们要先弄懂那些少则三五块、多则几十块的「防窥膜」是怎么实现防窥的。
The first step is to specify which APIs our application needs. This is done using an IDL called WIT. For our example, we need the Console API. We can import it by specifying the name of the interface.
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The 'magical' blue flower changing farmers' fortunes in India
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