cogent

The lawyer presented a cogent argument that proved her client was innocent.

(Chinese) 律师提出了一个令人信服的论点，证明她的当事人是无辜的。

Despite the criticism, the scientist provided cogent evidence for his new theory.

(Chinese) 尽管受到批评，这位科学家还是为他的新理论提供了有力的证据。