?碘化钠注射剂

英语3000必备词-crack ... * crack a code, ie decipher it 破译密码. 7 [I] (of the voice) change in depth, loudness, etc suddenly and uncontrollably （指嗓音）突然而失控地改变音色、 音量等: In a voice cracking with emotion, he announced the death of his father. 他悲恸失声地宣布了父亲去世的消息. ...