【化】 recess

凹的英語翻譯：

concave; dent; fovea; hollow
【醫(yī)】 concavity; depression; faveoli; faveolus; fossa; fossae; fovea; hollow
koilo-; lenus; pit; sink; venter

口的英語翻譯：

cut; gob; jaws; mouth; opening; ostium; scoop; stoma
【醫(yī)】 aditus; apertura; aperturae; aperture; bouche; introitus; meatus; mouth
opening; ora; orifice; orificium; oro-; os1; ostia; ostium; portal
stoma; stomata; stomato-; trema