单词	center of extension
释义	center of extension 延伸中心
随便看	double-hands double hand upward pushing posture double-hand upward-pushing posture Double Han Dynasty double hanger double hanging truss double haploid double haploid population Double-haploid population double haploidwarmke & blakeslee 1939 double happiness Double Happiness biscuit Double Happiness brand vinegar double happiness cigarette Double Happiness cream sweet Double Happiness crisp double hard-chine hull double-harddisk physical separate card double hardening double harelip double hare lip double hare-lip double harmonic buncher Double Harmonizing Decoction double harness