词汇	get a handle on sth
释义	get a handle on sth. 掌握某事，理解某事
随便看	external ophthalmoplegia External Ophthalmoplegia,Progressive External Ophthalmoplegias External Ophthalmoplegias,Progressive external ophthalmorrhea external opportunities external opportunity external optical density external optical feedback external optical modulation external optic axis external oral cavity external order external ordering external organ external organization integration external organs external orifice external orifice of aqueduct of vestibule external orifice of male urethra external orifice of urethra external orifice of urethra and anus external orifice of uterus external orifices external or internal floating-roof tank