他们听到了急促走近的脚步声和警卫身上钥匙的碰撞声。

They hear the urgent approach of footsteps and guard keys.

youdao

我用了几个实例演示了基本的JCSP构造(例如进程、通道和警卫等)的使用。

I used several working examples to demonstrate the use of essential JCSP constructs such as processes, channels, and guards.

youdao

有钱人的豪宅社区建立高墙并有警卫保护，他们的小孩搭乘私家轿车上学，学校也有一样的高墙和警卫保护。

Wealthy neighbourhoods are gated and guarded; their children are driven to equally cocooned schools.

youdao