config := validate_config(json)?; // bail if validation fails
Padé Approximants，详情可参考viber
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In addition, the U.S. can’t simply turn all of its crude oil into gasoline. That’s because most of the oil produced in the U.S. is light, sweet crude, and refineries on the East and West coasts are primarily designed to process heavier, sour crude. As a result, the U.S. exports some of its crude oil and imports some refined products such as gasoline.
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