v.证明（实），作证，提供证据，确言，宣称
P.to～about就某事作证

---

～against a person作不利于某人的证明

---

～on behalf of the accused为被告作证

---

～to one's innocence证明某人无罪

---

～under oath宣誓作证 V.～a fact 证实事实

---

～one's faith宣布某人很忠诚
O.～ing expert（一方当事人提供的）潜在的专家证人

---

she testified that Tom was at the defendant's home at the critical time她证实在关键时刻汤姆在被告的家中

---

the incomplete log entries testified to his sloppiness不完全的日志记录证实了他的马虎

---

witnesses～ing before a grand jury在大陪审团面前作证的证人Com.assert