fleeting

Time is fleeting.; Time flies.

时光飞逝。

I watched, smiling, knowing how fleeting these moments when they are small are.

我微笑的看着这一切，我知道这个时刻是多么的短暂。

Most touches were only about five seconds, but in these fleeting moments, we’re capable of communicating distinct emotions, just as we are with the face.

大部分触摸只有五秒左右，然而就是在这么短暂的时间里，我们有能力传达明确的情绪，正像我们通过表情所做的那样。