href = a.get("href", "")
// Stateless transform — a pure function。业内人士推荐夫子作为进阶阅读
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The halftone or ‘clustered-dot’ matrix uses a dot pattern reminiscent of traditional photographic halftoning. Here a diagonal variant of the pattern is given:
They have now begun a new life as part of efforts to secure the future of endangered seabirds that are on the UK red list for conservation.