来自 spontaneous,自发的，-ity,名词后缀。

1. The ersatz spontaneity of "Sunday Love" sounds especially hollow.

对《星期天的爱情》这首歌的即兴模仿听起来尤其空洞。

2. His enthusiasm was somewhat lacking in spontaneity, I thought.

我觉得他的热情有点勉强,缺乏自发的冲动.

3. He had the spontaneity of a child.

他有着孩童般的率性。

4. It is the distribution of energy that determines the direction of spontaneity.

决定自发方向的是能量的分布.

5. The romantic spontaneity and courage are gone.

自发的幻想和勇气均荡然无存.