（二）货物的自然损耗、本身的缺陷和自然特性；
Here we use pattern semantics; the default in Ostrich since they are also constraints as opposed to searches. The regex is assumed to match the entire string. This means that we are using stronger semantics than what a typical backend would have applied for the same regex. Our Black Ostrich paper mentioned above does a more involved comparison of anchor handling.
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// Nothing stops you from doing this
When they are being manufactured in a weightless environment, those atoms line up absolutely perfectly. The vacuum of space also means that contaminants can't sneak in.