单词	sandglass
释义	sandglass /ˈsan(d)ɡlɑːs / noun An hourglass measuring a fixed amount of time (not necessarily one hour).In addition to their lack of accuracy, sandglasses, waterclocks and candles were also limited in the total length of time they could measure before having to be reset.... She glanced over at the sandglass, and started. Early oceanic travellers used a sandglass to tell the time.
随便看	nesidioblast nesidioblastosis Nesite Nesitic neski nespola nesquehonite ness -ness nessberry Nesselrode Nessie nesslerisation nesslerise nesslerised nesslerization nesslerize nesslerized Nessler reagent Nessler's reagent Nessler's test Nessler test Nessler tube Ness, Loch Nessus

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