单词	high sign
释义	high sign noun : a gesture used as a signal (as of approval or warning) —usually used in the phrase give the high sign Word History First Known Use 1899, in the meaning defined above
随便看	hazzanuth haček Hb HbA1c HBCU hbcus HBM hbr HC HCA hcap HCF HCFC HCG HCL hcp hd hdbk hdg hdkf HDL hdlg hdls HDMI HDPE

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