There were evenings when they reached their rendezvous and then had to walk past one another without a sign, because a patrol had just come round the corner or a helicopter was hovering overhead.

• 还有些晚上，他们到了约会的地方，却只好走过去，招呼也不能打。 这是街角刚好来了伙巡警，或者头顶刚好转着直升机。