vt.发出,发射,颁布,发表
The metal container began to emit a clicking sound.
金属容器开始发出咔嗒咔嗒的声音。
It is unlawful for factories to emit black smoke into the air.
现在,工厂往空气中排黑烟是违法的.
She was heard to emit a cry of horror.
人们听到她发出恐怖的叫声.