他对自己社交能力的不足感到非常焦虑。
He feels very anxious about his ___inadequacy in social skills.
她在公开演讲时总是感到力不从心。
She always feels a sense of ___inadequacy when giving public speeches.
这个小公寓的空间不足让我们感到很不舒服。
The ___inadequacy of space in this small apartment makes us feel uncomfortable.
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