过去式 过去分词 BNC词频 45054 COCA词频 35546 a. 射出的 v expel (gases or odors) v give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc. v express audibly; utter sounds (not necessarily words) 原型: emit 过去式: emitted 英汉双解字典由 ECDICT 提供