"The firing starts when sensitive trigger hairs located on the (trap) door are touched," he said.

“当陷阱阀门上的感应毛被碰时，就触发了诱捕行为”，他说：“由于内部受压，门已经处于内向状态。”

youdao

In her fright she ran screaming and pleading toward the door on the other side of the room; but as she passed him he placed the gun almost against her very breast and pulled the trigger!

她惊骇得边跑边叫边求饶，朝屋子对面的门口过去；可是经过身边的时候，小孙儿几乎把枪贴在她的胸口上，扣动了扳机！

youdao

Overdue keys, an open door, or misuse of the keypad will trigger an alarm and record the event in the log file.

过期钥匙，敞开门或误用键盘将触发警报并记录在日志文件中。

youdao

The portable programmer, which plugs into the DC port under the locks, can also open any door, even providing power through that port to trigger the mechanism of a door lock in which the battery has run out.

FORBES: Hacker Will Expose Potential Security Flaw In Four Million Hotel Room Keycard Locks

So should you stand behind the closed door the system won't trigger access to those outside.

ENGADGET