Good studies are needed to lend credence to the notion that genuine progress can be made in this important field.需要进行认真的研究，以让人们相信在这一重要领域可以取得真正的进展。The new work may also lend credence to evolutionary theories.这项新工作也可能会增加进化理论的可信度。Empirical studies lend credence to his ideas.实证研究给他的观点增加了可信度。