词汇	keep a copy of
释义	keep a copy of短语⁴¹⁰⁸³vt.留副本
随便看	fiber-optic relay protection channels fiber optic repeater fiber optic rescetoscope fiber optic resectoscope FIBER-optic resectoscope Fiber optic resonator ring fiberoptic retroreflective turbidimeter fiber optic rhinoscope fiber-optic ring fiber optic ring media access controller fiber-optic ring media access controller fiber optic ring network fiber optic ring resonator fiber optic rod coupler fiber-optic rod coupler fiber optic rotary joint fiber optic rotation measurement fiber optic rotation sensor fiberoptics fiber optics element fiber-optic self-healing ring fiber optics fiber-optics fiber-optic Sagnac Fiber optics and optical communications