夜色茫茫,万籁俱寂。一支部队悄悄开到两座大山之间的谷口。指挥官用报话机命令部队停止前进,因为他要探明山上有没有企图偷袭的伏兵。这次,指挥官可没有像往常那样派遣尖兵爬到山坡上去侦察,而是从腰间取下专用微声冲锋枪,向两座大山发出一串串子弹,然后不紧不慢地戴上耳机。稍过片刻,他清晰地听到: “Come with me!”(“跟我来”) “Ok!”(“是”) The vast night, all silence. A force quietly opened to the valley between the two mountains. The commander ordered the troops to stop using the telephones because he wanted to ascertain whether there were any ambush soldiers in the mountains who had attempted to attack. This time, instead of sending pioneer troops to scout for reconnaissance as usual, the commander could remove a dedicated sub-micron submachine gun from his waist, send a string of bullets to two mountains, and then wear the earphones unhurriedly. A moment later, he clearly heard: “Come with me!” “Ok!”