profess

Although he professed to be an expert in the field, he couldn't answer basic questions.

(Chinese) 虽然他自称是该领域的专家，却回答不出基本问题。

She continued to profess her innocence even after all the evidence was presented.

(Chinese) 即使在所有证据呈堂之后，她仍继续宣称自己是清白的。