by radio的用法和樣例：
例句
- The police communicate (with each other) by radio.
警察通過無線電(互相)聯絡。 - The news was announced by Radio Beijing.
這條消息是由北京廣播電臺播發的。 - We made contact with the ship by radio.
我們通過無線電同那只船保持聯系。 - The officer communicate his order to the men by radio.
軍官用無線電向士兵下達命令。 - They made contact with headquarters by radio.
他們用無線電跟總部聯絡上 了。 - The officer communicated his orders to the men by radio.
軍官用無線電向士兵下達命令。
