With the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?
通过将正确的设备调整到正确的频率，如何防止小偷干扰你的设备阻止警报信号到达基站呢？
2
When following up, never, ever ask a reporter to alert you when the story is printed, or to send you a certain number of copies of the story.
当跟进媒体的时候，千万不要要求记者在稿子发表后通知你，或者给你寄几份样刊。
3
The black-bellied vole shuttles in and out of its underground burrow, everalert to dangers outside.