单词	etalon clock
释义	etalon clock 标准钟
随便看	course of disease course of dissolution course of employment course of epidemic course of event course of events course of exchange course of exchange ratio course offered course of fermentation course of fire course of flight course offset course of headers course of history course of infection course of inheritance course of instruction course of lectures course of life course of litigation course of manufacture course of nation course of nature course of ore 改行迁善改辕易辙改辙易途改过不吝改过从善改过作新改过自新改过迁善改途易辙改邪归正晚妆晚娘晚婚晚季晚学晚安晚宴晚岁晚年晚庄稼