Conciseness

Dense, purely procedural text that assumes competence — no concept teaching (no 'what a PDF is', no library tutorials), every sentence carries operational content. Not 5 because key invariants are restated several times (the A4-only-on-request rule appears in the intro, 输入与输出, 工作流程, and 异常与续跑; the single-generation rule similarly repeats), which could be consolidated; not 3 because there is no unnecessary explanation, only deliberate but trimmable repetition.

Actionability

Copy-paste-ready command templates for every state transition (prepare/status/reserve/record/review/assemble/fail) with an explicit variable-binding table (PYTHON, SCRIPT, PDF, JOB, PAGES, PAGE, PROMPT, ATTEMPT_ID, IMAGE, OUT, REVIEW), concrete syntax ('PAGES 可为 all 或 1-3,5', 240 DPI), a literal review-JSON example, and exact flags (--pdf-only, --a4, --allow-partial). Fully executable guidance covering both the common path and failure paths, matching the 5 anchor.

Workflow Clarity

Clearly sequenced workflow (prepare → reserve → generate → record → review → assemble → deliver) with explicit validation gates — assemble requires review records ('脚本要求新生成的采用图均已记录检查') and post-assembly verification ('封装后仍检查 PDF 可重开、页数、页面尺寸和嵌入图片完整性') — plus per-state error recovery (reserved/failed/recorded/recoverable_output each with a prescribed action, pending_assemblies re-run, --allow-partial path). Not 4 because this batch operation has complete checkpoints and feedback loops, exactly the 5 anchor.

Progressive Disclosure

The body is an overview plus workflow; the detailed 47-line generation prompt is appropriately split into references/image-translation-prompt.md and clearly signaled ('首次生成前读取'), and the 900-line scripts/pages.py is referenced as '正常执行直接调用，无需读取源码' — both verified to exist as real files. References are one level deep with clear navigation cues; not 4 because there is no inline content that belongs in a separate file and no buried or nested references.

Specificity

Quotes '逐页翻译为简体中文图片型 PDF', '尽量保留原文的版式、分栏、图表和公式', '最终仅交付中文 PDF' — several concrete, verifiable actions in a named domain. Not 5 because these facets elaborate a single translation pipeline rather than the multiple distinct capabilities of the 5 anchor; not 3 because coverage goes well beyond '1-2 concrete actions'.

Completeness

'What' is explicit and concrete ('将英文论文 PDF 的指定页面或全文逐页翻译为简体中文图片型 PDF'); 'when' is present as the purpose clause '用于论文阅读翻译' plus negative scope '不用于可编辑 Word 重建或逐字审校'. Not 5 because the when-clause lacks concrete trigger phrasing like 'use when the user asks to translate...'; not 3 because a when/scope statement is explicitly present, not merely implied.

Trigger Term Quality

Natural user phrases are present: '英文论文 PDF', '翻译', '简体中文', '论文阅读' — a user asking to translate a paper into Chinese would say these. Not 5 because common synonyms and variations (文献, 期刊, .pdf extension, 全文翻译) are missing; not 3 because the core natural terms are all covered, not just generic language.

Distinctiveness Conflict Risk

Clear niche (English paper PDF → Simplified Chinese image-type PDF) with explicit exclusions ('不用于可编辑 Word 重建或逐字审校') that fence it off from document-editing and proofreading skills. Not 4 because overlap risk is minimal — the output format, direction, and use case are all uniquely specified, matching the 5 anchor's 'clear niche with distinct triggers'.