unpenetrably dense
密不透风
unpenetrably thick
厚得无法穿透
unpenetrably opaque
不透光的
unpenetrably solid
坚不可摧
unpenetrably calm
异常平静
unpenetrably secure
绝对安全
unpenetrably private
绝对私密
unpenetrably silent
完全无声
unpenetrably strong
坚不可摧
unpenetrably closed
完全封闭
unpenetrably dense
密不透风
unpenetrably thick
厚得无法穿透
unpenetrably opaque
不透光的
unpenetrably solid
坚不可摧
unpenetrably calm
异常平静
unpenetrably secure
绝对安全
unpenetrably private
绝对私密
unpenetrably silent
完全无声
unpenetrably strong
坚不可摧
unpenetrably closed
完全封闭
探索常用高频词汇