emit

1. V-T If something emits heat, light, gas, or a smell, it produces it and sends it out by means of a physical or chemical process. 發出; 散發 (熱、光、氣躰或氣味)[正式]

The new device emits a powerful circular column of light. 這個新裝置發出一束強烈的環形光柱。

2. V-T To emit a sound or noise means to produce it. 發出 (聲音或噪音)[正式]

Whitney blinked and emitted a long, low whistle. 惠特尼眨了眨眼，吹出了一聲長而低沉的口哨。