Unpenetrable
a. 不能穿入的, 難穿入的
??? 情景例句
I appreciate it.
我很感激。
Where passion is high there reason is low.
感情高漲處，理智就低落。
We've been anxious about you. We were expecting you back much earlier.
我們都為你們著急呢。都盼著你們早點兒回來。