instantaneously

When you press the start button, the signal is sent instantaneously to the main server.

(Chinese) 当你按下启动按钮时，信号会立即发送到主服务器。

The airbags in the car deployed instantaneously upon impact to protect the passengers.

(Chinese) 汽车的安全气囊在撞击瞬间弹出，以保护乘客。