Many of us have experienced moments of insecurity when everything seems so big and new that you wonder if you can deal with all the pressure or whether you will eventually manage to adapt to the situation at hand.

### 解释 insecurity 是由前缀 in-（表示"否定"）和名词 security（安全）组成的复合名词。security 来自形容词 secure（安全的），加上名词后缀 -ity 构成。因此 insecurity 字面意思是"不安全的状态"，引申为"不安全感"或"缺乏自信"的心理状态。