单词	center of mass
释义	center of mass noun phrase : the point in a body or system of bodies at which the whole mass may be considered as concentrated Word History First Known Use 1862, in the meaning defined above
随便看	diethylstilboestrol diethylstilboestroles diethylstilboestrols dietic dietician dieticians dietine dietines dieting dietists dietitian gnash one's teeth gnashed gnashers gnashes gnashing gnat gnat hawk gnatcatcher gnatcatchers gnatflower gnath gnath- gnathal gnathic

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