4450-anxiety 焦虑，担心

4450-anxiety 焦虑，担心

Anxiety is modern man's natural state.
焦虑是现代人的自然状态。

Anxiety can be caused by lack of sleep.
睡眠不足可能导致焦虑。

His father's arrival lulled the boy's anxiety.
男孩在他父亲来了后便不那么焦躁不安了。