evidence

Compared meaning: to show or prove something is true (verb).

比较义项：证明、表明某事属实（动词）。

• evidence 本词

  Formal and fairly rare as a verb; the subject is usually a fact, statistic, or document that serves as proof, not a person acting to prove something.

  作动词时较为正式、少见；主语通常是充当证据的事实、数据或文件，而不是主动去证明某事的人。

  The data evidences a clear increase in customer complaints since March.

  这些数据表明，自三月以来客户投诉明显增加。

• demonstrate

  The most common, neutral word; often means to show something clearly through action, example, or practical proof, not just a verbal claim.

  四词中最常用、最中性；常指通过行动、示例或实际操作清楚地展示某事，而不仅仅是口头声称。

  The coach demonstrated the correct swing to the young players.

  教练向年轻球员示范了正确的挥杆动作。

• certify

  Implies an official, authorized declaration that something meets a required standard, usually made by a qualified person, institution, or document, not a personal opinion.

  指由具备资格的人、机构或文件做出的官方、正式认定，表明某事符合规定标准，而不是个人看法。

  The inspector certified that the elevator met all required safety codes.

  检查员正式认证该电梯符合所有规定的安全标准。

• attest

  Implies vouching from personal knowledge or as a witness, often followed by a “that” clause; the subject is typically a person or document giving testimony.

  指凭个人所知或作为见证人进行证实，后面常接“that”从句；主语通常是提供证词的人或文件。

  Three former employees attest that the company ignored safety warnings.

  三名前员工证实，该公司曾无视安全警告。

Evidence, demonstrate, certify, and attest mean to prove something true. Evidence is formal and rare as a verb, used with facts. Demonstrate is the most common, showing something clearly. Certify means a qualified person confirms a standard. Attest means giving testimony, as a witness.

这四个词都可表示“证明或表明某事属实”，但正式程度和使用场景不同：evidence 作动词较正式少见，多用于事实或数据作主语；demonstrate 最常见、最中性；certify 强调具备资格者做出的官方认定；attest 强调以见证人身份提供证词。这里不比较 evidence 的名词义“证据”，也不比较 certify 的具体义“颁发证书”。