He answered frankly and truthfully all my questions.

坦率而真诚地回答了我所有问题。

She looked her father straight in the eye and answered his question truthfully.

她直视着眼睛，诚实地回答了问题。

The discharge of hold-washings and other residues by vessels carrying noxious or corrosive goods must be conducted in compliance with the state provisions for vessel sewage discharge and shall be truthfully recorded in the logbook.

载运有毒、腐蚀性货物船舶，排放洗仓水和其残余物，必须按照国家有关船舶污水排放规定进行，并如实地记入航海日志。