例句與造句

1. the controlling box is composed of secure shell, flameproof elements ( signal indicator, ammeter, button, switch ) terminals, etc
   控制箱由增安型外殼，隔爆型元件（信號燈、電流表、按鈕、開關(guān)）及接線端子等組成。
2. It's difficult to find signal indicators in a sentence. 用signal indicators造句挺難的