单词	look out on duty
释义	look out on duty n.值班了望
随便看	surface chalking surface change Surface change method Surface-changing eequipment surface channel surface channel ccd surface-channel CCD surface-channel charge-coupled device surface channel mosfet surface channels surface char surface character surface characterestyc surface characteristic Surface characteristic of rice straw surface characteristics surface characterization surface characters of idioms surface characterzation surface charge surface-charge surface charge accumulation Surface charge characteristics surface chargecorrelator surface charge correlator